10.5 to 1 pistons

the reason for switching pistons L to R is to take advantage of the .015 offset on the piston wrist pin by switching them they will make about 10/15 more hp ,but the reason for the offset is to keep the piston from making that slapping noise when you start to get cylinder wear, most aftermarket pistons for performance have no offset ,and if you set up too much piston clearance they will knock (KB).(trw forged)