12A into 86 rx7
 

need to know how to hook the speedometer to the tranny of a 12a swop going into a 86 rx7.

the tranny is pretty much identile IIRC

why is a 12A going into an FC??? :confused:

he wants to be "unique" dude lol

oh...ok then....

well the cars was going to be junked so we picked it up and only have a race engine to throw into it. its coming out of a 10sec starlet thats going to donate its motor. we know its not going to be a 10 sec rex but it will do a good job on the street.

the 12a has a holly 750,racing beat intake, 2-bridgeport, monster exhaust port, 2-6al msd packs along with nos.

Just justify it by saying that the 12A weighs a little less than the 13B and that since the engine is shorter, the weight is closer to the car's center of gravity. There's 2 good reasons right there.