NEW 1955-1957 Chevy 2 DR HDTP, Convertible, Nomad Window Channel Adj Plates, and Gaskets.Used to adjust the front windows, one set does both doors. 1955-1957 Chevy 2DR HDTP, Conv., Nomad Window Channel Adj Plates & Gaskets-NEWSKU: 2.19$31.95PriceQuantity*Add to Cart