Hi, I'm trying to order parts for my van, and am running into some confusion. 2000 Ram B3500 Maxiwagon, 5.2L vin Y, 4000LB front axle, 8-lug.(8700GVW, Chrysler 9.25 rear) It seems like rotors are either 5-lug or 8-lug with no other distinction, but I wanted to make sure first. Wheel bearings & seals are labled 8-lug, w/ 4000LB axle, etc so those all make sense, but rotors seem vague on details... With wheel bearings listed for front 3300,3600,3800,4000 axles, or "5 & 8 Stud Hub w/o 4000 lb. Axle", it made me wonder if there are differences in 8-lug rotors as well. Do the bearings/races make up for differences between one universal rotor & several different hubs? Also curious, wheel bearings and races seem to be sold separate. With so many bearing options, are the new races already in the rotors ok to leave in here (like universal size), or do I need to order the separate races for the 4000LB bearings and switch them?