Hey Mike... Just PM'd you. Maybe you can offer me a suggestion. I just purchased a set of your cast iron frame pads for my 1964 Special / 455 conversion. The mounts I have are 4-3/8" on the inside and your frame pads are 4-1/8" on the outside. The motor mounts I have came with the 455 so I have no idea what they are from. Can you give me some direction on this issue? Thanks, Bill in TR View attachment 420819 View attachment 420820 View attachment 420821 View attachment 420822