I need to replace the spindle on passenger side...the trucks a 2 wheel drive, 1997 c3500, crew cab ,dually 6.5td...I found spindles off of other years but not sure which years I can use......is there a difference between the spindle for a dually vs. a single wheel..and what years are interchangeable also does anyone know the part numbers for the inner and outer wheel bearings?? I've come to not trust auto zone for finding the right parts cause they have given me parts they swear are right but don't fit...