Ok Pat.M you want to try and Kick old Tango around Ha-Ha . I tell you what I will build a Roller SB Chevy with your name on the Valve Cover . If you can Build one with a Flat Tappet Camshaft that can Live . And Tech every Engine that I built in My Life Time that had a Flat Tappet Camshaft never had a Problem ? Pat .M Face your Fears and Build one that can Live P.S Ask I can Help ya