I'm looking for the two brackets that bolt to the bellhousing and the tail of the exhaust manifold on the left side. For my '65 F/S resto, I can't find them in the parts book, but here's what they look like. I'm not sure if these came on '65s, but they look like a good idea. (Photo credit to 68 Cuda Formula S for the picture).
For some reason, they list both braces with the same part number....2465162....and they say only one is used per car! Maybe the replacement part was just a tube you had to cut, bend and drill?