Here's a few pics I thought folks might be interested in from the 69 Coronet RT I'm working on...
The first couple are a side to side pic of the LH B body inner rocker as compared to an original. Overall, it was a very nice fit. Great replication of the "bumps" by the turn up. The only differences I found were on the nose (1/4" too long). I suppose as with some parts, there were a couple versions. This was an easy cut and refold to mate up with the firewall. The apron also appears to be 1/4" longer as it goes down as compared to the original, so once the inner/outer are mated together, I'll trim it back. Much better than 1/4" short!
There were a couple holes for the brake line hanger clips that also needed to be drilled.