Greg, I lost the long reply I had just typed so this one won't be.
Two types of bucks mainly, eggcrate (station bucks) and wireform. Search the site for more info.
There is a guy on Instagram/Facebook that's been around a while.
http://kitcarik.ru/
He gets data for the bodies from hacking into video games like Grand Theft Auto. While the cars look great on the screen, I'm sure they are not 100% accurate. The printer files for FULL SIZE station bucks are $100 us. You can take the file to a larger printing company and have them printed full size. You then glue them to plywood, MDF, OSB, etc, and cut them out using a reciprocating saw.
Buyer Beware!!!!!!
1 - this guy is in Russia and there are lots of hackers in Russia so take necessary precautions. Sorry for sounding like a zenophobe. I'm not but the reality is the reality. I wouldn't walk into a lions den in a meat suit or walking around south Chicago
2 - the data is not going to be 100% correct so be careful as you proceed that you don't end up with an expensive cartoon car.
3- the guy has been around at least a year and I've had email conversations with him. He's not pushy.
4- all that said, for 100 bucks, it might be a start since you're not building a true replica. I probably would if was not 15 years on my own project that needs finishing.