Looks like Silvolite/Keith Black hyperutectic pistons.Check the KB website for compression ratings.I would pop the valve check the valveseats,and for pocketporting.That should give you the info needed for a cam choice.
i agree with this. those pistons should give you some pretty healthy compression being about .020" below deck, but measure it. looks like you'll have about 12.5-1 compression. i'd say use a good felpro headgasket and you'll still need to use premium gas. i'd look into a cam like the mopar 484 since you using those restrictive shoemaker hearders.
