Another 302 Head Question

Thanks guys!
Just the original head gaskets, and I'm not sure which ones i'll use. I'll probably go with one of the thinner ones upon reconsideration. The current heads are leaking at the front on both sides, and possibly at the back, even though I have a feeling the rear main is weeping too.
Thanks for the welcome! And I hope that once I get this done and over with that I'll find it to be worth it as well.
MoparOfficial, I have messed up on things before, will mess up, and always will. But I will certainly take my time on these. 302s are rare up here in NL. And I don't have the experience to go messing with the SSR, nor would I want to. The biggest thing I would like to see is to get the air coming in as fast as possible, as that is one benefit of smaller ports. Velocity is my friend. So, gasket match the intake (this eddy has 318 sized ports I believe), and clean up the casting (I don't mean make **** smooth, but any flashing and that), take some material away from where the valveguide comes out. I like strength so I'm not going crazy there. Why shouldn't I gasket match the exhaust? Will I lose much velocity coming out? I assumed that the headers having such large ports that it wouldn't hurt to at least flare the exhaust ports a little? Please correct me if i'm wrong.
Now, the main purpose behind this is to fix my leak. But, do you guys (ya'll got the experience, I don't when it comes to this) think that there will be a slight gain? Switching to 302s with a lil port work, will it be slightly noticeable? I'm gonna do it anyway, i'm just curious