It's inspired by a one-off that was built in the states in the late 1950's called the Troy (see pic of green car).
I've used 1.25" box section for the main chassis tubes, and 1" for the truangulations. Originially, I used Toyota Supra rear suspension as well, but had to modify it to suit. It go to a point where I had amde so many compromises to use the Supra suspension that I chopped it off and mounted a whole Lexus IS rear subframe. It wasn't an elegant solution, but it solves a lot of problems. The track and stud-patterns etc were all the same. The donor IS also had a torsen LSD, which is a bonus.
The wheels a 16" American racing jobs with tires from a "soft-roader" for the period tall-tired look.
The Lexus V8 motor (1UZ-FE) is a pretty tight fit, but it's light, strong and cheap. A friend is a Lexus V8 guru and he has wired it up to run on the factory computer. It makes a good racket as I haven't made the exhaust system yet!
http://youtu.be/dj8kzcpIALwThe bell housing is an aftermarket item made here in New Zealand.
The rear body section is a fiberglass piece out of molds that the friendly local fiberglass guy had for a 1950's style sportscar. It's supposed to extend out over the wheels, but I chopped those bits off and am about to make sides meet the chassis, so it looks like the Troy.