hi guys need ur suggestions. Im dropping in a jspec s4 engine/tranny into my 86 n/a, I was wondering if i should get a mazdatrix driveshaft that will let me use my TII tranny with my n/a rear diff OR should i just save my money up and get a whole TII rear end.

 

save up for the full deal, or just break the NA diff and do it anyway. It your choice, if you can keep in mind the weak diff and be nice to it, no clutch drops or draging with slicks, it will last awhile, but another note, is you 86 a LSD rear diff?

 

have you checked their website? im sure it would tell you and if not then you can always call them. they have great customer service IMO.