I stacked some cardboard and bolted down the intake to be even all around and used feeler gages to check all corners and I need .160 thick gasket or spacer with gasket so it looks like I need to make a .100 spacer from aluminum and port match it.

GOTBOOST!New improved with Victor heads.
http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/