[FirstOwner69]

Originally Posted by jocko

agree, that's a neat upgrade. That's a squarebody clock, believe there are a few threads on here about the conversion.

I believe member 70shortfleet (Les) has done some of these conversions and has a thread in the parts for sale board offering to punch the dash tins for clocks and tachs.
https://67-72chevytrucks.com/vboard/...d.php?t=497031

Here are pics of 2 I've done. Unfortunately, I didn't take pictures of the process I used.