just bought a set of SE protwin 103 + heads part number #17071-03 ported & polished with compression release on ebay.I have flattop piston install, for best result i have to boost my ratio 10.5:1 to matched my head i will go with Screamin' Eagle® Pro Twin Cam 103+ Stroker Piston part number #22484-04
my question is do i have to order oversize piston +.005 and make my cylinder to fit or i will be ok with a normal size with new rings !!!
thnx