Join this forum
http://saacforum.com/index.php
introduce yourself, provide a link to the car and the members will give you a thorough walk around on what is presented and what you need to learn about the car.
There are people on SAAC that know about GM supercars as well but this would be the best place to inquire. They can be a bit suspicious of "newbies" and bit close vested when someone posts for the first time so be sure to say hello and tell them a bit about yourself. If you use the same handle or reference this forum I will greet you.
Kerry