[ken-r-mer]

They are a set of stock uncut Weiand heads. Came across them a few days ago in my ongoing obscure global searching. The Joe Abbin Performance Handbook has the stock heads flowing the most cfm (intake and exhaust) than all other general name brands (not including Navarro or other more exotics) on his Tables 4.3 and 4.4 for valve lifts between 0.05 -0.40". The head volume is 69cc, and max lift of 0.455" (intake) and 0.425" (exhaust). The Schneider P-3/8 lift I'm contemplating on is 0.375". No data (yet) on the clearance above stock pistons using a stock compressed head gasket thickness of 0.055". Also have no data (yet) on the wall thickness above the valve or piston dome areas.
Just worried the machining might get exorbitantly $$$ to address the flaws.
Also found that Cometic has head gasket compressed thicknesses in roughly 0.10" increments from 0.055" to 0.090" (non-copper).
Preliminary calcs: with the relieving should bring the CR to just below mid 7's with the Weiand heads. So with either 5-6 lbs boost and 91 octane gas (street use), and a general use area of 1,200' altitude, no pre ignition or detonation worries for a safe blower combo...even if I (accidently) hammer it HARD on the freeway on-ramp.