Where are some websites to find bellhousing for 76 duster.

That would be 75-76 A body as after that they were F bodies. You can post an ad in the wanted section.
i didnt even think to do that unfortunately the only place ive found is brewers, which is unfortunately the one they are out of stock of and I did not find it on passon performance, so i figured I was probably missing some websites as I havent been in this hobby for very long.