This is what,I did... I demand an adjustable valve train on even mild hot rod engines.. It is expensive.. Crane stud/guide plate kit 150.00-160.00 ,Comp cams aluminum roller rockers,160-ish.., custom push rods,(Comp) 110.00... lash caps,(stock 8mm Empi VW ,got the valve sweep perfect....) I wanted it,& paid for it.. Ouch,on the prefer ences..