these are old original mounts.i have both 6 and 8

Darrell. I am just curious. What brand is the V8 mount you have and do you happen to know how old they are ?

Macs auto are listing a transmission mount 54-56 mercury V8. Do you know the difference between a Ford and a mercury trans mount ? https://www.macsautoparts.com/ford_mercury_late/rear-motor-and-transmission-mount-mercury-312-v8.html

The Transmission Mount itself is the same for 6 or 8. Only difference would be Automatic or Standard. If You are only out by an Inch as U stated your best bet would be to move the Transmission forward that one inch and modify the Transmission Mount to go forward One Inch. i still don't understand why its not going together as it should.

  

Yupp. They are corect. I need the right trans mount.

First letter "U" is for 272. so the v8 Mounts should have been right.

  

Oh man. Why cant just people do it right the first time 😞 i already have linkage trouble beacause off the mummert intake i have innstalled, and that intake does not have the holes too the factory trottle bracket. Beacause of the fordomatic i guess i will have to fabricate something new here. If i get into exhaust trouble with this swap, i might as well order a rom on the hospital, i just hate exhaust modification. 😞

Serial No: U5FW216014
64A. YE M. 3FDD305.

Cant find the identification chart inn the shop manual.

i should add if you go with the v8 mounts you will have to change a few things.gas linkage trans linkage if its an automatic.motor will be closer to the rad which may not mike a difference.exhaust may have enough play to move.trans mount lots of fun.i would go to the v8 mounts myself but thats up to you.

mount and crossmember are the same.