X block, 4" stroke 360-1 Indy head build questions

I like the ideal of a hydraulic roller to. I'm not sure what cam makes more power between a hydraulic roller and a solid flat tappet, guess I may check in to that and the pricing differences. I was talking to a buddy today about the solid lifter flat tappet cams. He was telling me they are laser cutting a oiling hole in lifters on some of these now. Guessing that is helping with some of the oil and cam issues we have been dealing with since the zinc elimination became a problem in our oil.