It's been a few years, but my experience, IIRC, found them to be different between the HT and the Conv. Isn't the HT curved and the Conv angled on the top edge? Not only that, but, the '67 HT was unique as it didn't have any holes for the lower bracket. Instead it has a press on bracket. The '68 factory parts manual shows them with different part numbers and I always thought the '67-9 Dart and Barracuda used the same ones, but, the HT's were different.