Looks like the GM part number is 12338082 for a black one. If you search that number on eBay you'll find a few new ones for sale. Can't confirm if it'll fit a 1978 but they look to be the same. They also come in beige (15670579), blue (15651517) or gray (15651485).
1995 Emerald Green Chevy G20 350TBI Gladiator conversion
Re: Chevy door panel window/door handle trim pieces
#734383 March 27th 2018 4:11 pmMarch 27th 2018 4:11 pm