When I converted my truck to five-lug disk brakes I replaced the hub with a combined hub and rotor from a 70's car that used roller bearings like most the five-lug kits do.
I don't remember exactly how I tightened the bearings, but I do remember that I looked up the car I used as my parts donor and used the bearing tightening specs from it.
I didn't actually use much from the donor, but knowing my brakes are based on a '73 Chevelle wagon does make things like these settings and ordering parts easier.
