This is the place we usually get them.
https://www.airpowerinc.com/
I think it is a Continental. After buying 14 engines and all of them went over TBO, we like their work. We had one engine on the 206 that was running perfect. It had great compression on all the cylinders, and no leaks or issues at all. The mechanic that signs his name on the log book would not sign off on it anymore. And he was not even the guy that did the engine swap. It was simply the FAA requirement.