Southward in Eugene (541-431-0556) they have BB Mopar torque plates for the final honing and Sommers (360-699-5205) in Vancouver, not sure if they have BB Mopar torque plate yet I've always taken mine to them when I had them do my work.
Southward does a lot of HD industrial engines and they have a lot of machines that the smaller shop don't have so they do a lot of other shops machining for them Neil is there salesman and he pickups and delivers all over the state. Talk to Don, Randy or Carl