nitrous junkie

A guy I work with has a set of heads for sale he said they are 289 heads with 54cc combustion chambers they are supposed to be heart shaped.He said they came off an old falcon or mustang.I'm wondering if these heads would be worth building for my 5 liter mustang and if everything would still bolt up because i'm still running fuel injection.Would I be better off to find a set of explorer gt-40 p heads or just save my money for the AFR's I really want.My car has edelbrock performer upper and lower f-303 cam underdrive pulleys BBk headers .030 over forged pistons 1.6 roller rockers stock heads and 100 h nx nitrous kit.If these heads would make alot more horsepower than my e7's then I might buy them cause there very cheap,I would have more money in the machine work and valves and stuff.Any knowledge would be greatly appreciated.

mjr46

they won't be emissions compatible = will render egr and thermactor air system inoperative, otherwise they will bolt on