Is there a record of units made, by year, and models built that year? Our 1991 has markings all over same as 147, and I wonder just what that means. Thank you. Dale

We have been curious about this too and I think Lee Merriman has a lot of records and with some research, encouragement and sujpport, maybe we could document the number, models, and eventually the current owners. It's a large undertaking but when we were part of the GMC group, they were working on it and had thousands registered of the 12,000 manufactured between
1973 and 1978. Did Barth start in 1971 and close down in 1998?