How much would the compression ratio go up with a .030" head gaskets on my stock 5.3. Stock heads stock pistons?

 

btter to mill the heads and get a .050 gasket.
stock 5.3 is +.010 deck, with .030 compressed gaskets, u will have .020 quench area too dam close, usually a .035 quench is correct for hi perf. motors.
how much scr u shooting for?