It could be anybody's that has been painted that color. It can be a Vigilante, Pro-torque, Pats.....etc. I don't know of anyone who builds a purple color like that. Other issue is that it could have been restalled without any guarantee that the part number on the outside was changed to reflect it. This is a bad thing about converters. There's no true way of knowing the stall without putting it in the car and trying it.