I think most would agree that today’s ring choices are superior in less friction and better seal,
and new rings might require new pistons.

I think most would agree that thermally coating oem piston crowns
yields about 1% more peak power and better fuel efficiency.

If the new pistons reduce the quench clearance into the range of 0.026 to 0.33 inches from the crown flats to mating surfaces on the cylinder head there might be 2-4% gains if ignition timing gets re-adjusted too.

Different pistons might require an expensive crankshaft rebalance.

If you are not racing or not having to meet super strict EPA fuel economy fuel economy regs, stay with original.