i came across a TH350/NP205 combo for sale in the local auto trader for $250. since i'm planning on building a 4x4 sometime in the near future, would this be a wise purchase? the TH350 is said to be good, as is the NP205. will this trans be strong enough to hold up to a 355 or a 383? that's what i plan on running, since i have a Vortec 5.7 shortblock that just needs a crank kit. i've had good luck with TH350s in 2wd trucks before, but i'm unsure of how one would hold up in a 4x4. thanks for your input.