hello from MN
 

hi. I currently do not have a rx7 and am looking for a good project car most likely a second generation. I am wondering were a good place to start to compare rx-7 as far as i know about rx7s is that they are rotary and there are 3 generations of them, i am looking to learn a little bit more.

Welcome to the club!

The Rx7 wikipedia article has some good information that would be the best place to start.
http://en.wikipedia.org/wiki/Mazda_RX-7