Those with T5 trans installed - questions on PPF, diff, driveshaft, sensors, et.
 

I have a thread with some questions if any of you can help me out:

https://www.rx7club.com/forum/showthread.php?p=7826883

Custom driveshafts are quite common in the muscle car world, there's probably a shop in your area that can make one for you if you give them all the information they need. You could probably get one made in aluminum too if you wanted.