1966-1970 Cadillac Series 75 UltraMat Sound Deadening insulation Deadener Heat Floor Kit1966 1970 Cadillac Series 75 UltraMat Sound Deadening insulation Deadener Heat Floor Kit The engineering team at Zirgo Sound Labs has specifically designed this kit for your 1966 1970 Cadillac Series 75 Inner Floor. This kit includes all the correct material needed to reduce echoes, drones and unwanted rattles resulting in a quieter ride. The exclusive advance design of the open closed cell foam wall helps remove unwanted sounds by absorbing