Im replacin the rear diff. I got axles off, th rear diff mounts off, the subframe mounts on each side of the car and its not low enough to get to the front diff mount nuts.
I read a few things on this but cant find the info. Does that hinge looking thing need to be unbolted. The one that is on the driver side of the pumpkin. Do the struts have be disconnected. What will make the subframe drop? Any help is appreciated Im moving soon and need to get this drivable.

 

Yes, disconnect the Camber Bar and the struts. Loosen the nuts to the diff housing. Once it is low enough, remove the nuts holding the front of the diff to the subframe. You will have to have the car realigned after putting everything back.

When you reinstall be sure to put the front diff nuts back on before you raise the subframe. It is a Complete PITA and helps to have two people. Just replaced mine last week.

 

Ah yes. I've had to do this twice myself last winter.
A long extension and a few swivels helped me get through those front diff mount bolts.

 

Here's a writeup I did, replacing the front diff mount. I don't know if it will help you any or not.

https://www.rx7club.com/2nd-generation-specific-1986-1992-17/front-differential-mount-replacement-write-up-pics-574592/

Cheers,
Cody