1990-1992 Jaguar XJR-15 UltraMat Sound Deadening insulation Deadener Heat Floor Kit , Sovereign, Vanden Plas, Executive, XJ6, XJ121990 1992 Jaguar XJR 15 UltraMat Sound Deadening insulation Deadener Heat Floor Kit The engineering team at Zirgo Sound Labs has specifically designed this kit for your 1990 1992 Jaguar XJR 15 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 background noise