SACD_Runner: a couple of other things (sorry i got distracted with the other stuff)
yes everything in the front stays still when your hubs are unlocked.
my truck actually does the same thing when i let off the gas (and mostly in 4th and 5th gear), but it is just a grinding/growling noise, no shakes. mine is definately the tranny (which is the stocker and has over 350k miles on it) but it doesn't give me any other problems besides the noise. so yours may be the same thing.
did you just do the gears in the rear too? if so, then your problem might be that the gears are not installed properly. make sure your backlash, heel-toe position, and face-flank positions are all set correctly. i don't know the specs off hand, but i'm sure you can find them in a manual or something. it sounds like yours is the tranny though, just like me.
toyrunner87's problem might be the tranny too! but the reason i strayed from that (for both of you) is because mine doesn't cause the steering wheel to saw, or effect anything else, just produces noise.
