This is mainly for newbies who want to know what are the differences between each model, but still has some good info for all. It's a little hard to understand at times (i'm pretty sure this was translated), but you shouldn't have too many problems.

http://members.rogers.com/sofronov/C...ary/85RX7.html

 

Except that page is rampant with errors like that the series 5 changed in 88. Hell, there wasn't even a series 5 car built before 12/88.

Things like:
refreshened??? Series 2??? The series 2 RX-7 was built between 81 and 83 and was the first gen.

Or silly things like: where the rear was really 3.91:1 not 3.98:1 and 4.10:1.

And dozens of things like Sorry that page should not be recommended to anyone before it gets proof read and corrected.

You would be much better off recommending pages like:
http://www.mazda.co.jp/history/rx7/Java/index.html
http://2ndgenrx7.freeservers.com/page1.html
http://home.earthlink.net/~icemark/FCseries4.htm
http://www.iluvmyrx7.com/
http://home.rmci.net/panther/tech.htm
http://fc3s-pro.com/