What Rocker Arms Are These?

This is great info. Thank you sir! I wonder if Rocker Arms Unlimited could install bushings. I'm thinking it'd be cost prohibitive though. I may call them tomorrow. If it's too much, I may just sell these and put the cash towards a different set.
My Mopar performance aluminum roller rockers don’t have any bushings. Bare aluminum runs on the shaft. Over 700 pounds open spring pressure. These are 20 years old. Made by Crane. Kim