Both the 4x's an the Prerunners sit on the same platform. There is no real difference between them except one has a front differential and one doesnt. On the TRD package you get the bilsteins, the locker, the leaf springs and the front coils from what I've heard are progressive to be more "suited" for running through the desert. That and all prerunners are 2wd/automatics unless someone has converted it. I thought you could only get the TRD package with the V6 too but I've seen several 4 cylinders with it so I think it might be a special order thing but I'm not sure. The TRD prerunner and the stock prerunner suspension are the same, you just get the progressive stuff with the TRD package compared to the stock stuff. And of course you cant forget those cool stickers which add up to 15hp each <img src="/forums/images/graemlins/lol.gif" alt="" /> The two wheel drive 5 lug trucks or taquitos are on a completely different platform. Where our trucks use a true coilover the little trucks are setup like the 2wd silverados and f-150's with an actual coilspring and coilbucket <img src="/forums/images/graemlins/kewl.gif" alt="" />