At
Permalink 239 there are pictures of the stock subframe. In the rear there are two horizontal bolts and a (~4") round rubber mount and in the front, on a higher plane, two vertical bolts bolt solidly to a crossbar with two vertical rubber mounts 12-14" apart.
I have the MGR and subframe but I'm still short the crossbar and front mounts. Try to get a package deal where you get to decide how much gets salvaged.
OTOH they were $2500 new on eBay. Motor mounts aren't that big a deal.
OTOH the whole MGR, subframe and suspension could be a bolt-in package.