are you talking about the rear mm or the tranny mount?you can do it without supporting the engine, but you will need a pal to rock the engine back and forth to get it re-aligned in order to get the bolts thru
3 bolts? Mine only has two.
I got the TRZ delrin
I think he might be talking about the the bracket that holes the Rear motor mount to the transmission. It has 3 bolts and makes it a bit easier to take out/put in the mount if its giving you trouble.
thanks guys. i just wanted to know because i have a SU MM but i didnt install it so i wasnt sure. its been making alot of noise so i gotta check it out.