I am using a .027" cometic head gasket currently.

How much of a difference do you think I will see?

How high can I go with the compression and still run on pump gas? Maybe switching to domed pistons would be an option?

How much can you safely mill the Eddy heads? By my calculations 74cc heads will get me to 10.84:1 and 72cc will get me to 11.06:1.

'72 440 Cuda
11.673 @ 115.91 w/1.663 60'