Here's what I'm looking at now. Rocket you already know this...
http://www.rx7forums.com/forum/viewtopic.php?t=216

I agree wiith
2. Get it compression tested. All rotor faces, or just look for anything about 100 on a fll compression test.
3. It has a series 5 body style, so it was either put on their afterwards or it isn't an 87.