http://www.mame.mu.oz.au/salman/zturbo.html>For a huge amount of info on V8 conversions and L28 conversions, go to Zhome.com and scroll down to the "Modifications for More HP" section (on the left).
Here's a few pics of BOTH setups to wet your appetite...
L28 Turbo Powered


V8 Conversions


...or, ever think of doing a VG30DETT transplant? :-) Greg Dupree did, check out this video!
http://www.300z.com/~seedyrom/300ZX/Hooters/gregdupree.mpg - if the link doesn't work, email SeedyRom and ask him to put it back up.
Someone posted a video of a 240z (or maybe 280) with a Corvette LT1 engine swap. If you want it, email me.
Good luck on the project. Don't do the CRX, keep it in the Z family! Hope this helps!
Hey, if anyone needs free Cliff Notes, go here: PinkMonkey.com