QUESTIONS ON THE 6G72

guys i have a bunch of inquires about mods for the 6g. first off how interchangable are the engine parts from a 3000gt's 6g to ours? i.e. headers, cams, ignition. majorly i was wondering whether the exhaust manifolds from a 3000's would work or whether even they were the same bolt pattern? if i could get this guy i know down in florida to make exhaust manifold from the vr4's then i could theoretically get him to fit two 16g's in there and do the piping. i do plan on building the block before i have the turbos but i just want some feedback from the crowd. oh and hell yeah a five speed is in the near future. oh and one more thing, i beat my friend in his lightly modded 02 stratus r/t. hes got the dreamspeed intake and im stock whats up with that?