any opinions on just how noisy a solid diff mount is? mine needs replacing and i am on the fence. a little extra noise is no big deal since i drive my z just for weekend fun. but if it is really obnoxios i don't want to regret it.

 

25 years ago, I made a solid front mount for my 260Z The
stock mount separated and it looked weak.

The solid mount transmits the load diff whine into the car. The
diff also has to move around or it will break something.

Make the mount solid, use rubberdonuts like found between
a frame and body and be sure and keep the pinion angle
the same.