I know that, I was trying to find out if the OP was intending for this to be an upgrade or possibly something else. Kind of sounded like he may be trying to attempt to run lockout hubs on the D30. I just hope he wasn't thinking that D44 outers are going to gain him any stregnth as every time my D30 broke it was the joint that went first, and I was running Spicer joints with the caps tacked.