[SCOTI]

Beach-Burban,

As @Bigdav160 mentioned, the mounts in the first image are what I thought were post-72 mounts & the 2nd image is what I always understood were for 68-72's. They're what I used for my BBC swap in my 67/68 mothballed project. LocDoc knows his history but I researched/learned about the mounts before doing my swap & never was told there was a '72 only' frame stanchion/mount. Interesting to learn this.

Back when I did my BBC swap, Sanderson didn't make the BB8 headers for trucks. I used the BB3's for 68-72 Chevelles. I had to trim minimal amount from the edge of the frame rail (~.1875-.250"?) where the collector is located. I just wanted to share what I did.