Please forgive me my mopar brothers and sisters !

Best friend in High School had a Vega with a Buick 231 V6. Cam, Headers, Holley, 4 spd. Was never embarrassed to ride in that.

Around '74 0r '75 I helped a friend put that same (but stock) Buick V6 in a vega wagon. Was a damned good idea. Looked that it should have been the engine used by the factory originally.
I think we used an Adapt a Kit. Went in easy.