Better heads worth it?

[Redchevy87]

I have a reman 350 in my truck. It has 71 350 76cc heads on it. I have no idea what the cam is but I assume it’s a stock cam. Is it worth swapping to a set of aluminum 64cc heads? I know a cam swap would be ideal but I am afraid to do a flat tappet these days and I think if I’m going to put the money into a retrofit roller I might as well just get a crate engine. I also have an edelbrock eps intake and summit headers. Any thoughts or opinions?