Speedway roller rockers for small block?

Just got a chance to check out the link. If they follow the engineering principles that they appear to understand, then there is a good chance they will do it right. That's not always a given though, because I've seen a lot of engine builders who will meticulously set up the valvetrain on a Chevy or Ford motor, and when building a Mopar, just slap the shafts on the stands, torque them down, and call it good.
Once your engine is built, pull a valve cover and post a pic. It will be readily apparent if they did it right, and I sincerely hope they do. I don't like seeing Mopar guys getting second best, or blowing stuff up because it isn't right.