KB HyperT's?

Hi all,

I'm in the process of exchanging my uncut J's to the RHS Heads stage 1 through Shady. I purchased the car after the bottom end was completed. After opening up the engine last eve I notice KB HyperT's with valve reliefs. Without miking it appears to be 005 positive deck. I'm familiar with the top ring gap problem with KB HT's, the engine had approx 3000 miles prior to tear down. Ran great, no detenation problems! Even hit 7200 rpms on occassion I just want more power if I can get away from stroking. I like the 340 .030 over aspect. I would like to run 10 1/2 to 1 or a little less on 91-93 pump. I have a 508 purple with an air gap and quick fuel 650DP. Any suggestions on head gasket thickness, or if I should can those pistons? Seems the KB Cast HT's have good and bad press!