im not sure how i feel about the weight distribution, since youre hanging another half of an engine over the front of where the vg sat.
but, thats just a guess, maybe it would be cool with different spring rates.
ive seen an sr z32 around here that was pretty cool, seemed to fit perfectly in the engine bay, clutch fan and all

i think if i was going to do an I6 in a z32, id probably do a 1j or 2j, and not have to worry about turbo vs. master vs steering shaft stuff personally.