[va_tlc]

well a friend of mine bought a 72 4x4 blazer and we were talking and he cant figure out what the spring behinde the drivers seat is for. he said its about a foot and a half long and attachs to the floor on one end and its stretched out a lil and hooks to some sort of a bracket?? i havent actually saw it. but told him id ask the pros on here . thanks for any help you can give.