Todd74:When i run this engine i'll let you know how it run's if it starts popping piston's i'll say it , if it runs hard i'll post video. The engine was thought out by Kirkum Engine's and Reed Cams to run on 93 and hell i only have 1500.00 in the complete bottom end. It's not that i like throwing money away but i am curious as hell to see if this can be made to run daily on 93. I don't know the particulars but i do know the key is the cam design and as they were planning on running a carb and i'll be using electronic fuel injection with almost unlimited tuning ability i'm thinking it will be intresting to see if it can be made to run. If not a new set of pistons and ballance and assorted ammenities.