I actually corresponded with him regarding converting a 292 to a roller set up. I did find a roller core at Crower that we had custom ground. We plan to use some link bar lifters to match.
It was CNC Dudes help that really got me to thinking critically about this project. His idea was to use a stock roller set up from an 2.5L inline four, the Iron Duke some call it. Bad part about that is the parts are out of production except for the lifters. It just uses a standard fare hydraulic roller lifter for a small block Chevy. It's the lifter guides and the hold downs that's the kicker.
