any help on some numbers? I have a 04 5.3 . I have a set of 806 heads ported with bigger intake valves(2.02) I'd like to install these heads on the 5.3 with a .588 lift cam 114 lobe. 228 duration. Can I get some compression back with a thin gasket and will this setup be equivalent to the stock 5.7 that was in my 98 trams am. I have 3500 stall and Tranny upgrades already. I'm trying to not get milling done and this is all the parts I have to work with. Thanks for any info!