I know I have read it somewhere but can't find it. I have a 74 and have a set of extensions from a 72. Which bolts line up and which need to be drilled. Also the top radius seems to not match up.
On my '74...the hole were there from the factory. Dum-Dum putty was covering the hole. The top piece was easy...the bottom piece you will need to drill new hole to mount the lower extension and fill the factory holes.
