Small Block Heads

Hi All,

I don't know if this is the right section to ask....
But here I go.. I have a 66 plymouth Barracuda with rebuilt 273. Come to find out the that one of the heads(cast iron original) has a crack in it. So..... What type of performance heads are out there that I can basically purchase and will bolt right on as a replacement. I also installed headers(doug headers) so i want to make sure the heads will work with this application as well. Just to clarify, i"m no mechanic but i would greatly appreciation some suggestions. I want to make this as painless as possible once i switch the heads out.

Thank you all