I did a google search for a project I am working on, and came across this thread. I have seen the original GM Ra6, orange GTO, which to me was rather breathtaking to say the least. Anthem Motors built I think 4 of of them. The first black one that took first place at SEMA for best exterior design, was actually owned by the dealership I worked at the time. It was purchased by a pro golfer. It was a awesome ride. The last one they built was a pearl white unit with major engine upgrades
click on to enlarge
Here is my collection of RA6 pictures
The great thing about the GTO in general is the design is timeless. Upgrade the chassis to the ZetaII and you have a vehicle that can rival the Camaro. Modify the body a little to get a retro Firebird look, and bingo!