B6 A4 Front Calipers... 288mm Calipers won't fit 288mm Rotors
 

My mechanic went to replace my front rotors, calipers, and pads and the 288mm calipers I ordered from Rock Auto didn't match what was on my car!

The distance between the bolt holes on the caliper are 4.5" whereas the original ones on my car are 6". I tried searching online for different front caliper sizes for the B6 A4 but didn't find anything, has anyone else experienced this? I don't know what calipers to order!