Brown1998, I used this set up, and the mounts, for my 52 Panel and I could not be happier with it. I did not have to alter firewall, or floor board and I used the "big" distributor.
http://i140.photobucket.com/albums/r19/LutherParris/52Panel/Engmount.jpg.... I did cut about 1/2" right at the top of the toeboard where the tranny came up to it. However, when I put the tranny cover in place you cannot even see the where I cut it.....and I mean only 1/2 inch just at the top.
Some folks modify the original rear cross member and some order one that bolts right in. Choices vary but it is not a hard job.
Good luck.
