you are arguing on which way the Z32 was designed.
Was it first designed as a TT and then made a watered down NA version?
or
Was it first designed as an NA and then beefed up with a pair of turbos?
I believe that after you see a TT's precat you'll realize that the Z32 engine bay was designed around the NA engine, not the TT. If they had designed the Z32 body around the TT engine I am sure that they would have designed the engine bay to be a bit longer and perhaps somewhat wider becuase Nissan barely managed to squeeze the turbos in there and the precat's are an ass backwards design that was a neccessity for the TT's and their design shows it.