Add structural support to the dash when installing a DIN radio on older GM vehicles! This Metra 87-99-3052 Single-DIN or 2-Shaft Installation Kit for Chevrolet/GMC Truck fits 1973 through 1987 Chevrolet Blazers and Pickups and 1973 through 1987 GMC Suburbans and Pickups. Do the job right with Metra!. 2-shaft or DIN. Adds structural support to dash when installing a DIN radio