1965-1971 Mazda B-Series UltraMat Sound Deadening insulation Deadener Heat Floor Kit1965 1971 Mazda B Series UltraMat Sound Deadening insulation Deadener Heat Floor Kit The engineering team at Zirgo Sound Labs has specifically designed this kit for your 1965 1971 Mazda B Series 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