Hey steve, I added a couple of inches to them & did it myself, I had not removed the back 2 inches of the trunk pan so they were just hangin there, didn't have my "new" tail panel at that point so I didn't want to drill out the rears, seems to have worked out ok, the actual pan didn't rest on that cross member anyway! & I did all the weldin to the pan from the top.
Mike, may need that for the 74,thanks, 73 is going in as modified(just a tad) so I'm not going crazy with details, just want it to be clean! Rich.