Need the shouldered bolt which attaches the front stabilizer guides to the front of the glass of a 71 cuda. . The guides slide up and down on the front vertical glass stabilizer. The bolt goes through the glass, a plastic round retainer and the plastic stabilizer guide. Need 8 of these bolts (4 per car). Was told they are not reproduced. If not reproduced then is there a substitute? The bolt main shank fits through the hole of the guide. The threaded portion of the bolt is shanked down to screw into the retainer.