Hello guys ,i need some expert help in my buildup.The motor is a JDM ITR using a +5cc Wiseco piston with 81,5mm diameter, Mugen headgasket and milled 0,6mm on the head. Accoring to my calculation the compression should be 13:1, i jut want to make sure i have the right compression for my build up,My measurement on the combustion chamber is 45cc stock before milling the head, after milling is 40cc (i might be wrong) and i also dont know the Mugen gasket thickness for sure. Thanks guys any help is greatly appreciated