Fuel Pump Mounting Problems

Just bought a 68 Valiant 2 door, slant 6. Fuel pump started spaying gas on first test drive after purchase. I finally got the old one out and replaced with a Delphi brand (standard replacement) from AutoZone. But while attempting to install, the left bolt was really hard to get started and the bottom of the housing was hitting the motor mount. Just after start-up, had big oil leak. Removed fuel pump and noticed the housing cracked and that the bottom of the housing tail was longer than the orginial. Obtained a Precision fuel pump (replacement) from Orielly's and attempted to install. Started to connect lines and noticed an even larger crack. When removed the casting was broken off. Attempted to remount old fuel pump but couldn't remount old pump. The bottom of the pump was hitting the motor mount which had been replaced by previous owner. Any body had problems with replacement motot mounts?

In the photo, I noticed the corner of the motor mount sticks out and up over the rubber and will need to be removed before next fuel pump installation.