I am swapping a 351w into my 85 stang and for oil pans i had heard that the one from a late 80's 4wd bronco may work but i couldn't find anyone that said that they had used it and it worked for sure. I tried one because my friend had one in his garage and it didn't clear without raising the motor an inch. I made an adapter out of 1" squares stock to put between the mounts and the block and it cleared fine.