I have had the Fuji .099 IBS both in lapped iron and in ABC. The cylinder is similar to the Enya .09 (actually .099 too) in porting design. All of my Enya .09's out performed the Fuji's for some reason, probably due to better fitting piston and liner as well as better metalurgy. The Fuji's were nice , but they were turkeys compared to my Enyas. Needless to say I still have my Six Enya .09's and do not have my Three Fuji's anymore.