I have not seen any postings on this site of someone adapting one of these motors by itself (turbo or NA) or with its 6-speed transmission. The GTR is a butt ugly car, only available in automatic and with a high roof line. Both the 350 and 370 are higher cars than the 300zx. I would love to see someone do it. As far as the trans being in the back in the GTR, why would that be a problem? I would assunme the motor is based on the same 3.7 DOHC Al block used in several Nissan vehicles.