Bub, my sig is a V6 gasser. I'm picking up the CRD next weekend. If there was a decent SFA kit that I could buy reliably and still use as a daily driver, I would consider it. I am a firm believer in the benefits of independent suspension if properly designed, being a soldier for 18 years, the HMMWV has gotten me into, and out of, some amazing places. It's not that I'm trying to just throw money at the Jeep, it's that I want to set it up as best as I can in the beginning, without having it sit for 6 months waiting on parts and work. This will still be my only vehicle in the end.
Tom,
Al recommends 285/75R16 as the max size. I have yet to speak to him in depth regarding the pros and cons yet. I suppose there is always a weak link in any chain, I'm just trying to identify it ahead of time so I can budget accordingly. If the front diff is the next week link, then perhaps I should put the steel one on the list too. Not that I can necessarily afford all of this, but if I can crunch the numbers of how to do something like this "properly", then I am LESS surprised.
As for the regearing, I have not really considered that. I do have 4.10s in my current axle setup but figured the CRD would make enough torque to overcome 33" tires without too much of an issue. I could just remove them and put them in the CRD, if you guys think it would be benificial.
I honestly can't say if it will be worth it, I'm sure it will look awesome and it needs to be functional, I hit some very rough trails every weekend. I mean, in the end is it worth modding a Liberty at all? Everyone here seems to think so, including myself. There are many more vehicles more capable and tested, but I happen to like the lil' Jeep, I'm just trying to gather some data to take it to the next level. I may be the R&D, but someone has to do it right?

And as for why, the clearance sucks right now. It scrapes and drags on everything with a 2.5"-ish lift. One would assume with an extra 3.5" of clearance and the additional 1-2" of tire that I could more easily clear obstacles. And let us not forget the pure style of a properly lifted Libby. Sexy beast.
Thanks for all your input, please keep it coming. I am far from an expert on these machines and I am open to all constructive information you guys can provide. -Rob