Roller Lifter Options for 59 deg R1 Block

By far the best roller lifters i have used are the crane ultra pro’s. Had several sets of them, but in production blocks or X blocks( which are identical to production block up top)
Not sure if bars would clear using them on R blocks. But if they would, no brainer.
I had one set of them i ran 5 years street and strip and at freshen up Best Machine said they still looked great. Nice pieces
Other set i believe still being used currently