can i use this driveshaft.
 

on my 86 NA im swapping in a jdm 87 13b-T. I was looking at the mazda trix aluminum driveshaft. Will this work on my car. Will it mount tp the rear end. If i wanted to use it would i have to swap out the whole rear end or would i just swap the rear differential to a turbo differential?

To use the Mazdatrix alum driveshaft, you need a turbo drive line (Turbo tranny, Turbo rear end).

thank you