Have a set of NOS tailpipes with resonators. One has # 3852802 stenciled on it with 62- 64 w/ h-p written on it, the other does not have any markings on it but does look it is match to other, still has a tag on it General Motors Parts Division , Sandston Virginia to Murray Chevrolet Bedford Va. unable to read numbers on tag. Does anyone have any information on the correct application for these? And possible how much they might be worth??? .!,