Ok so I have a few queries for the enthusiasts .. I have so far done k&n intake & rejected, aftermarket performance end can, iridium plugs, heavy duty clutch overhaul now I’m am planning to make a custom stainless 2×1.5″-1×2″ pipe and a full top end overhaul Including opening the ports and polishing exhaust port polishing and reseating the valves and honing the cylinder bore however to do this I assume I will nide tighbore piston rings and maybe slightly bigger pistons does anyone know of any rings or pistons from any other engine that might work or anywhere that does oversized pistons and rings for this engine and what is the standard compression pressure in this engine