steel rods? i would't take much off the deck. IMO with it being a nitrous combo. just clean it .005 if possible. keep as much material on the deck surface as possible. you can take it away, but not really put it back
we just went down in the hole with my new pistons from .010 in the hole to .020.with my 598 with 6.60 rods.adding a 2nd kit so it should help make it more nitrous friendly. the old pistons had a 1.270 comp height so there was still plenty of room for a good ring stack with the new piston now @ 1.260.