LA Cam Swap In A Magnum?

I had to run .050 Cometic head gaskets for clerence of the LA pistons coming out of the hole. On the Magnum block I'm looking at a .028 gasket to gain some compression over the stock mag compression. That .~020 difference my call for a different pushrod length. We'll see.... I plan on running an LA front end, timing g chain cover etc.. I will need a different balancer.
I am running Crane 1.6 roller rockers.