Nice bike and build.Agree with Nitro and MC on bore size,1080 + 100 for stroker crank...@ 1180 my guess.Nice parts,I been kicking my hi comp 836 Calendar Girl...lots of fun,first kick nothing happened! ;)cranks first kick once running for the day,2-4 if been sitting.You probably could/should post in hi/po section.Good Luck,Bill