[quote The TRW's we're using L2316F)have a 7.5cc relief. If I have to shave - so be it, but I need the compression so not sure the best route to take.

You will be milling the heads & probably not the dome. this calculator is very nice. http://kb-silvolite.com/calc.php?

live every 24 hour block of time like it's your last day on earth