Here's a website that should help straighten some things out.

 General Motors cars are very easy to catagorize into bodies or platforms. It's pretty well sorted out and clear. The Mopars, however, aren't as cut and dry. They have a lot more crossovers and grey areas where one car is actually another then becomes its own model then an option. It's pretty confusing, but this website helps clear it up.

MoparStyle.net is a very simple website that is broken down by body platforms. They've got chronological information for each platform. Check it out for yourself and see what you can learn!

www.MoparStyle.net