I'm also with Ron on this. It's the classic trade off of performance vs cost vs reliability. If I had everything but the cam in my posession, and money isn't hanging from a tree in my yard, I would be looking seriously at a solid flat tappet. You're looking at around 2k for the entire roller set up incl rockers and pushrods or 300 for custom solid flat and lifters. If starting from scratch w no money concerns, roller all the way.