LA Roller block cam options

You can have them grind the same/similar spec into the roller. Just tell them "I love this cam from ***, can you grind this roller with as close to the specs as possible? But yet still take advantage of it being a roller?"

Not for nothing but, really what ever you want in the regrond of a cam is possible to a large degree. You can copy the duration at .050 and shorten up the advertised duration by a good bit.