bbc closed oval cores wanted

[newguy]

I am looking for a good rebuildable set of cores, no cracked heads please. I need the closed chamber heads to bring up my compression, and prefere cores or bare heads as I will be adding larger valves and springs, so most of the hardware would be just thrown out.

If possible, I prefere in or around Minnesota, as the cost to ship them would make them less cost effective choice for me. Please email me and let me know how much, and which castings.

Thank you