After many months of waiting, today I finally received the correct drums with the .53 in. diameter bolt holes.
If you are ordering these for your truck, make sure that you have them drop shipped directly from the Centric warehouse in City of Industry, CA. As of this writing, several vendors still have stock of their own that have the larger .63 in. diameter holes.
By referral from Centric, I ordered mine from
http://store.zeckhausen.com/catalog/ in order to assure the drop shipment.
