I might be in the minority here, but I personally think that terminator shortblocks are seldom ever worth the money. If you don't open them up, you have a most likely heavily used bottom end with 10s of thousands of miles on it that comes with the less than ideal Zollner pistons that have pretty tight piston to wall clearance stock (meaning that they have a tendency to expand and scuff your cylinder all to hell during extended high speed pulls).
If you were to do it right, you'd tear it down, hone the block, replace the bearings and rings, and throw in a set of 2618 alloy pistons like Manley, Diamond, Ross, JE, etc. By the time you do that, you would be better off just building it from scratch.
By the way, Romeo's have 17cc dish pistons from the factory. Terminator pistons are 18cc dish. Your compression would actually be a fraction of a point less with the new shortblock.
You need to upgrade to a Cobra pump/pickup tube/billet gear set also. You can throw billet gears in a SOHC oil pump, but they will not flow as much oil as a set of billet gears in a DOHC pump. Don't believe me? Go measure your gears. SOHC gears are .47" wide while the DOHC gears are .51" wide.
What does your dyno sheet trap?