no the frankenlift kit is not the same as the rusty's kit but I'm sorry dirty, I don't agree with you....
I have an '04 sport....I bought the rusty's coil replacement kit before the frankenlift was on the market....it replaces all four springs and all four shocks....I could afford the all-j frankenlift and would choose to purchase it because I wish to support those guys that support us.....and I don't doubt that it's a very good product.....but I have their boulderbars and transmission skid, and I purchased the detroit true-trac for the front differential from them, so I don't feel too bad about defending a alternative suspension kit that I think is a good value....
the complaints about the rear shocks being poor quality are overstated....I installed the kit myself and when I slipped the rear shocks in, I immediately saw that there was side-to-side slop in the mounts.....the shock eyes where the bolts go are slightly narrow for the mount locations....all you need to do is go the lowes or home depot and purchase a handfull of fender washers....5/8" inside diameter, about 1 3/8" outside diameter.....maybe all of 10 cents apiece....remove the top bolt and slip one or two washers inside the mount to take up some of the slop....do the same for the bottom mount if needed....this is also very to easy to fix later at home if you had someone else do the install and they didn't catch this....
I noticed this small difference in fit when I installed my kit so I put the washers in at that time....I have never had any problems or noises with my rusty's lift....I've been to moab, jeep jamborees, and local trail rides and the kit works fine....I have 245/75/16 bfg at/ko's with no rubbing and no fender well modifications....over 25k miles.....
I'm sure that there are some guys here who have first hand experience with the rusty's kit and may disagree with me but there are also several here who will back me up....adding a couple washers is entirely within the range of expectations when working on any kind of machine, especially a modification of a jeep....people who say the product is bad are more than likely just repeating something they've read and the issue gets accepted as fact....I recently installed a frankenlift kit on an '02 KJ....it came with rancho shocks for the rear and it had the same loose fit....we put one washer inside the top mount....I also helped install a rockfather kit on an '05 and we had rear shock bushing issues with it too....
I'm not a shock absorber expert and I'm sure that the rancho shocks are a great product.....the same tenneco corporation manufactures shocks and struts for original equipment autos and trucks, for monroe, ranchos, and probably the ones rusty uses...they just have different design specs....the bright yellow old man emu shocks are the same color as monroe so I wouldn't be surprised if tenneco manufactured those also....
and as for installation, I can tell you that just because the frankenlift front struts come preassembled, that doesn't mean it's easy to install them.....getting the lower clevis mount aligned for the bottom bolt is a real challenge because of the height of the coil assembly.....I like the kit and recommend it but it fits in the front pretty tight.....