May have a winner here. Four Seasons/Trumark 35504 Blower Motor without Wheel was used on quite a few Mopars including a 1980 Dodge B-300. RockAuto.com let me blast through various Mopars until I found something close. Amazon had this for $27 and it will be here Sunday. If the holes line up, I will tape it off good and blast and coat it.

Will check in again next week in case anyone is interested.