I have an ABF in my Mk1 and about three years ago I fitted a Supersprint manifold onto a custom rear section and following some update work which required the engine to be out of the car I needed another D shaped (half conical) mesh wire exhaust gasket. I could not find an alternative that fitted as all the others were a larger OD so I wrote to them and they offered to send me one free - I cheekily said can you send two and they did. Fantastic service but I must qualify this statement by saying I have no particular interest in the company other than a very satisfied customer. Nice to see "customer comes first" in any company these days!