Drum brake hub size?

[GreyHoundSteve]

I was talking to Fred at Wheeladapters.com and he needed to know the hub size of my rear end and since my truck is about an hour away i was hoping someone here could help me out with a measurement.

I need the hub size for a 6 lug drum brake 67 rear?

I supose the hub size for the discs would be the same but better safe than sorry. The hub on the drums doesnt protrude but i plan to go to rear discs eventually and dont want to have to replace the adapters then. Anyone know the hub size off hand or could measure it for me?

Thanks in advance.