Hello. Just installed new steering rack on my '03 Caravan SE. Bought the part at Autozone so it's a Duralast. The instructions said to install bushings on the 2 mounting bolts (passenger side) but they were not in the box. Went back to the store and the guy said "yeah they never include those". He could not order them seperate. Was wondering if I really need these and where to get them? Thanks