I have my buddy's 1998 A4 in my shop and the bearings inside the passenger front spindle assy are totally shot. I want to order a used set up but there's two different bearing sizes available 75mm and 82mm. How can I tell which without totally breaking everything down and specing everything out with a caliper ?? I have the vin if that helps.

 

Oh yes, it's all wheel drive with front c/v axles.