[norm67]

Can someone please tell me how the original center ac vent on the 67 mustang was attached with correct hardware?

Thank you in advance.

 

[Redneckgearhead]

.....

 

[Magnus]

I'm pretty sure it's just held in with tabs on either side of it being sandwiched between the metal dash and the plastic panels on either side. The panels have a plastic post that goes all the way through the dash and has some self threading nuts on the back. Might be https://www.npdlink.com/product/mounting-kit-instrument-bezel-to-housing-8-special/100951/200177?year=1967

You have to loosen the instrument cluster portion and the over-glovebox portion to get it in or out.

 

[67gta289]

The flat non-A/C as well as the flat version with the convenience control option both have tabs that align with holes in the metal dash, but I agree that the larger panels on each side have posts and the plastic center piece is clamped in place. No dedicated fasteners.

However, for the A/C version, which is much heavier - metal vs. plastic - there are threaded studs. The Ford electrical assembly manual (published by Osborn) shows a quantity of two 371024-S2 nuts for the A/C option only - no fasteners without A/C.

According to the Ford standard and utility parts catalog (1969 version) a 1/4" "nut - self threading" type 1 is listed as 371024-S7, which has a different finish. Attached is a picture from that catalog.

The Obsorn/Ford diagrams are copyrighted, so I'll respect that and won't post pictures from it.. You should consider picking up a set.