Which style?
there are 3 basic styles of HPBJ60
early/mid 90s with regular wheel hubs (2 different brake styles early/late) - Dynatrac uses this style outer
99-04 Superduty - unit bearing (same unit bearing that Spidertrax and Currie use) - Inner knuckle is the same as early BJ, Outer knuckle is interchangeable with early
05-current Superduty 250/350 - Bigger unit bearing, bigger knuckles/Cs, bigger everything, 35 spline stubs factory
05-current F450/550 dually - 10 lug unit bearings (interchangeable with the 8lug 250/350 bearing) HUGE knuckles and Cs.