Ok I don't wnat to be flamed I love RX7 the engine desighn is great but I don't own one. I was wondering if anybody knows the rearend Gear Ratios available I am wanting to use the rearend from one for my mini Truck w/ a sbc I see many post here about duing it should I and stuff but no post on the rearend

 

Most common is the 4.10 from most stick cars and the 3.90 from auto cars. The 4.30 was available in limited quantities but from what I've heard rare and I'm not sure what models had them. Adapting one to a mini truck should be an interesting project - make sure you keep us posted.