I would like to hear from anyone who has posted their G heads. Did you find it necessary, or for added insurance? My target static compression ratio will be 9.5:1/w DCR of less than 8:1. I'm hoping to get there by either zero-decking the block or having pistons .005 above deck, using flat-top pistons/w no valve reliefs, milling the G heads .021, and using Best composite head gaskets. The 292 block is now + .060, but I hope to use + .075 pistons (3.825) if the block passes the sonic check. Needless to say, I don't want to deal with head gasket failure down the road. 

How beneficial will it be to step up from stock 7/16 to 1/2-inch head bolts/studs?