'78-84 302's (HO or not) have D8OE heads just like late 70s/early 80s 351w's. I want to say '85's do also. Only problem I can see is that your intake manifold will not line up correctly to different heads. Not sure about exhausts.
Check this table for more info:
http://www.cehighperformance.com/for..._car_codes.htm