I am very reluctant to post yet another Chevy V8 mated to a slushbox powered 240Z -- it is just so 1990s. It isn't that the 350 is a bad engine, it's just that there are hundreds of other engines that would make a cooler swap -- something from Nissan like a VQ35 or RB24DETT, or even outside the stable with a Mazda 13b, Ford 2.3 turbo -- just anything but another pushrod V8. Anybody?
Expect something around 300 horsepower from the low tech hunk of iron under the hood, plus lots of torques and great reliability. Okay, the cheap power, torque, and reliability is probably a reason everybody uses the 350 for a swap...but still.
See another Gulf livery themed car for cheap? firstname.lastname@example.org