GM Part# 3916621 NOS GM COWL PLENUM AIR CLEANER DUCT
 

This is not my listing, I just saw it on ebay, bewlow is their description: I didn't want it to get buried in the classified section in case anyone is looking:

NOS GM PART#3916621 COLD AIR COWL PLENUMS AIR DUCT ASM .THIS IS NOT A REPRODUCTION.THIS IS VERY RARE IN ORIGINAL GM BOX.HAS NEVER BEEN INSTALLED.WILL FIT 67-68 CAMARO Z28.WILL ALSO FIT 64-69 CHEVELLES,EL CAMINO,IMPALAS,PONTIACS.SERIOUS INQUIRES ONLY!

https://www.ebay.com/itm/223338970324?ul_noapp=true

Paul

I had one (might be this one who knows). I found it on the shelf in a salvage yard unopened in the gm box in the early 80's and paid 5.00 for it. I sold it back in the late 80's maybe 1990 for 500.00 and thought I broke the bank.

i sold one a few years ago for 3k

Very Steep for just the DUCT in my opinion.

I need one for my 67 Z-28 but there is no way I would pay that much.

You could make a mold for that much,and make them. lmao.

I could 3D print them if I had a 3D model.