mazdamandan
+1y
hmmm not too sure bout that, there are m series and b series trannys I think, I do know that the turbo 2 rx7 engine( 13 B) bolts directly onto our 2.2 and 2.0 with manual 5 speed trannys
investigating engine swaps has confirmed that for me
the better sites for confirming this info are mx6forums.com and solomiata.com
I do see a few IRS RX-7 swaps though
I think the 5th gear was better top speed , so some o the internals are different
there is a chart on solomiata I think....
hope that helps