Yeah late reply but...yes those are the ones. You can remove a schitt load of mat'l off those with no problems. I had a whole corner whacked off a BBC with that mount and had no issues. It wasn't much of a motor tho. Only 477 cubes and just over 14:1 pistons
The car had 1.40-1.42 60' times and ran over 400 passes...on the stock mounts! If you think pullin the motor's a pain, get started on the headers. I do understand the welding class angle tho.