So, the KJ-based Nitro gets a 260hp 4.0 V6 as its optional engine. I'd like 260hp! Its just bored/stroked so it wouldnt be any heavier or physically larger. I bet the engine mounts are the same. And they put that engine in front of the same transmissions (I think) so I bet this would be a pretty straightfoward swap. Heres an info page (they list different HP than the dodge site) http://www.allpar.com/mopar/38-40.html

I dont think that they sell the 4.0 as a crate engine...nor do I have the knowledge, money, or time to pull of that swap. But that would be badass to have something like an H.O. option for our KJs!

::EDIT::

Turns out I was wrong, the 4.0 is a derivative of the 3.5 V6. But still, if its going in a vehicle as similar to the Liberty as the Nitro it would probably still be a straightforward swap.

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2006 Sport 4X4, Deep Beryl Green, NSG370, NV241J, Lifted with OME 927/948 and Bilstein, JBA 4.5 UCA's, Custom 3" Rear Y-Link Extension and Swaybar Relocation, 265/75-16 Toyo Open Country AT2 tires, Black Plastidipped bumpers, flares, and doors, Pioneer speakers, Alpine head unit, 1200w Phoenix Gold Amp, 12" Dayton Reference sub.

the '08 Liberty is pretty much based on the Nitro maybe it will have that engine as a Liberty SRT6

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2002 Patriot Blue Liberty, 1999 Subaru RS, 2004 SV-650

Is the Nitro replacing the Durango in '08? I see similarities in the overall profile. (Oddly enough, the current Durango and Liberty have nearly identical tail lights. Go figure.)

Menard's home improvement stores are giving away a Nitro. I can't stand the look of the thing. If I won't, I'd trade it in on a Wrangler, or if I wanted to go the "crossover" route, a Mazda CX7.

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2003 Liberty Sport
Bright Silver Metallic
Daystar lift
General Tire Grabber AT2 245/70R16

If what you want is power, you could build a custom turbo kit or even one of those kits that replaces the muffler with a turbo. That would take care of that.

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2004 KJ Sport 4x4
L.O.S.T. #006901
Rusty's 2.5" Coil Lift & Diff Skid, 245/75-16 REVO's, K&N
****Grocery Rated****

No, the Nitro is not replacing the Durango. The Nitro is about 1/2 scale of the Durango.

Their is an SRT Nitro coming, but I didn't hear of a SRT Liberty in the works. Is there confirmation of this?

Besides the engine, you would need to swap over the ECU and all of the associated hardware to make the thing run properly. These days an engine is only as good as the computer controlling it.

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02 Liberty Limited
Silver Outside & Taupe Inside
Heated Seats, Sunroof & Infinity speakers
USA Spec I-Pod adaptor, Mopar Sub, Garmin GPS
Tow Package, Select-Trac
Rock Rails, Tow Hooks

It's going to be very difficult and expensive. Also, the new 4.0 is basically a stroked 3.5, not 3.7. You'd be much better off building the 3.7, or waiting to see if it ends up in the '08. I don't see them coming out with an RT or SRT Liberty. I think they did that on the Grand Cherokee for the die hard 59ers whose GC's are starting to get old. Of course, if I was in the market right now, I would try to get my hands on an '05 or '06 CRD and build it.

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June 2001 Liberty Limited 4X4
Frankenlift II Premium, Al's Upper Arms, 245/75R16 C Silent Armors on Moabs, RL Skink Super Sliders, Rear DTT, Riddler Diff Cover, Fastman Throttle Body, Profinish-Proglass Hood, Borla Dual Outlet Exhaust, TransGo Reprogramming Kit, APS Stall Converter, 4.10 Gears, B&G Chrysler PCM, Lots of Line-X, etc...

I've heard that the 3.7s and 4.7s both dont hold up to boost well, thats why the supercharger kits were pulled off the market. Piston rings cant handle it is what I remember reading.

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2006 Sport 4X4, Deep Beryl Green, NSG370, NV241J, Lifted with OME 927/948 and Bilstein, JBA 4.5 UCA's, Custom 3" Rear Y-Link Extension and Swaybar Relocation, 265/75-16 Toyo Open Country AT2 tires, Black Plastidipped bumpers, flares, and doors, Pioneer speakers, Alpine head unit, 1200w Phoenix Gold Amp, 12" Dayton Reference sub.

Boost is not easy with a 3.7. For a turbo, you will need forged pistons and rods and new rings. A built set of ported heads would be a good idea also. You'll probably want some 224 cams too. The composite intake manifold could pose a problem also. You're going to need a B&G flash, but I don't know if they do the computer with 4 wiring harnesses that the new KJs have.

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June 2001 Liberty Limited 4X4
Frankenlift II Premium, Al's Upper Arms, 245/75R16 C Silent Armors on Moabs, RL Skink Super Sliders, Rear DTT, Riddler Diff Cover, Fastman Throttle Body, Profinish-Proglass Hood, Borla Dual Outlet Exhaust, TransGo Reprogramming Kit, APS Stall Converter, 4.10 Gears, B&G Chrysler PCM, Lots of Line-X, etc...