Driveline is offering the machining of stock oem heads to accept domes and o-rings for $125 no core exchange and $100 with a good useable core. The oem head must not be decked more than .020'' or so. At .030'' decked its not useable. The heads will come with copper washers, acorn nuts and o-rings. Domes are also available at $55 a set, stroker domes are extra per the specs desired.
Turn your old roached stocker into this.
Domes will need to have the o-ring.(fyi some other brands of domes do not have these)