I dont' want to bring back dead threads either but... you can take a VG TT and turn up the boost for virtually no money. Add some bolt ons and a little electronic trickery...well that puts you up upwards of 450hp and equal or maybe even slight ahead of that on torque. Thats for a damnsite less cash then it would take to stuff a 350 under there. You would blow all the money just on getting the engine in the car with out even touching the performance side. Then once you get that VG up to those levels you would have to start thinking about rebuilding the engine with forged bits and so on...but that is the same thing with the 350...your mainly looking at having a really expensive unique car that still won't be much if any faster then a guy that blew his VG to crazy levels...if its worth it to you to have a V-8 in a Z then go for it. You'll get alot more bang for your buck with the VG though.