Best 273 and 318 builds (NO 360's please)

This is a good thread so far..Keep it going...I'm rebuilding my 318, And I'm starting with what I already have, it ran before: I have no idea what the compression will be, how far the pistons are down in the hole, and what cc my 360 J heads are...They do have 1.88 and 1.60 valves...The block has been bored .060 over, and it has no name flat top pistons with 4 valve notches...I'm using the Edelbrock RPM cam and lifters, performer manifold, and some sort of roller rockers, whichever ones I find that are used. lol

It kinda sucks that I have to build this thing in the dark not knowing what I have. But as I go, I'll CC the heads, and check to see how far down the pistons are, check the thickness of the head gaskets..yada yada...Lotta math I gotta do...