Mount/subframe question

Ok so I am starting to build my 340 for my 71 Demon and I'm looking at my accessories donor 318 (70 barracuda) I notice that my mounts don't match up to the Demon subframe. Can someone enlighten me as to what is my issue and how to correct it please..? It doesn't have the holes for the cross bolt of the mount. Only to a top stud type mount.