For those needing frame mounts for a v8 conversion. Crites Restoration now has them available for $99 They also have a trans crossmember for $104 http://www.critesrestoration.com/mustang.htm
Pick up some used Stang or Falcon frame stands. Surely can find a pair of those for less. If your car was a 6, you don't need concours acceptable frame stands.
And to think, I got a set of frame stands yesterday for $8 and a transmission cross member for $9! Junkyardin' is fun as hell and pays off!