The only cheap A-body headers are the Hedman 78030 for B-bodies. Very little if any massaging required. The problem is, they only fit with low-deck blocks... probably not worth trying with an RB.

Hooker makes fenderwell headers which get in the way of everything (tires, ground...)

Depending on how "built" your 440 is, would anyone recommend the Tri-Y's (Schumacher)?