Anything's possible on a Jay Leno style budget. There's a reason 240Z's are cheap in your neck of the woods, and it's spelled R-U-S-T. A big part of your budget will be spent on bringing the sheet metal back to cherry before you can begin to think about adapting a drive-train, electrical system, etc. First thing to check is the wheelbase and front-rear track. If that doesn't match perfectly, forget it. I doubt if they do, which leaves you with a tremendous amount of customization to do narrowing, widening, etc. Hardly worth it. If you like the 240Z, buy a 240Z, and appreciate it for what it is, then go buy a 370Z and get all that the 240Z could only hope to become. In the long run, you'll be money ahead with a better equity position in both cars as a bonus.