Hughes hyd roller lifters

I'm running 1.6 Hughes roller rockers and hyd roller lifters in my 340. No work done to the block. My lift is .544 with the 1.6 rockers. Brian at IMM is prepping my J-heads right now. I clearanced my pushrod holes with a carbide burr. Not the prettiest but I got the pushrod clearance I needed. It's better just have Brian do it for you. The RHS heads don't need to be clearance if I recall.