408 top end changes, new trick flow heads??

We do know Hughes repackages cams for profit... if you like one of their grinds just send your cam to a cam grinder and have them grind it to that spec for $79...
I'm having some of the same concerns you are with compression. I will say it was suggested using a Fel Pro I believe 8553 which has a .53 gap instead of the 1008's .39..... of course that's the budget route obviously you can get a cometic gasket to any thickness you want to pay for.. I think I said this on your other thread earlier but you have a pretty nice combination that just needs a little more sorting out and careful of "trick flow fever" too quick...