300zx is a stout motor. You can use the standard 3.0 either in turbo or n/a mode. Lost of people are doing 9:1 compression and throwing a turbo on it for daily drivers.

People have also started swapping in the 3.3, and/or boring it out and running it turbo'd or non. Modifications are required for the 3.3, I am however planning on running a 3.3 bored to 3.5 with forged pistons.

Tuning options for this car are somewhat limited. The greatest currently is Nistune, which gives you the possibility to datalog real time with hook up for wideband.

There are definately lots of options.

If you plan on getting ride of it. let me know. I love Z's and was thinking about making a track car