I have no idea on the bolt patern or whats interchange able on the RX8 to the RX7 vice versa.

13b/13bt/and 13b re (I think) all can mate to a TII tranny.. only diffrence with the n/a is you need a clutch disc that has the splines of a TII disc,but the outter diameter for a n/a disc if you use a n/a flywheel.

What are you tring to do,if you dont mind me asking?