my head flows pretty descent ive got a stage 1 head from slowboy racing its got a port and polish job on it and flows pretty descent they had it on a flow bench and sent the sheet with the head on how it flowed but i lost it so i know all thats taking care of... i was just tryn to clarify some stuff i had heard from alot of other people almost everything on google and everywhere else onlie stats its in between a min of 5-10hp per lbs so ill stick in the middel with 8hp per lb...