Originally Posted by Ulysses The prothane for the rear motor mount from the sentra fits the g20 rear motor mount.
I'd be interested for a confirmation on this since the rear b13 insert is a ways smaller diameter than the p10 insert. And the inserts that I've seen people use for the rears has an extra large hole thru the sleeve so it isn't a good fit.
Forgot to take the picture with the aluminum adapter in the middle.
Now measure from the center of the mount sleeve to the bottom of the crossmember(left of the xmmbr in this pic) and bolt the p10 mount that isn't sagged back in there and measure again. I'm sure the sleeve is closer to the xmmbr on a b13 mount. It isn't right.