3/8" pushrods and SB Edelbrock head clearance

I'm running a mild Crane hydraulic cam (.454"), 1.5 Crane roller rockers, dished 8:1 Ross blower pistons, Eagle H-beams on a 4.0" forged stroker crank and a BDS 6-71 blower. I needed custom length pushrods (7.05") with a cup tip for the adjuster screw, so I contacted Smith Bros. Pushrods and told them what I had. They sent the 3/8" diameter pushrods.

I wanted to drop the heads off at the machine shop and have them enlarge the clearance holes.