Plastics

Hi guys, haven't been on here for a good while. I've managed to get myself a 1987 GPZ750R in very good condition apart from some of the fairing. It needs a little bit of welding and then a spray job. I've had our local plastic welder in who will do the job but needs to know what kind of plastic it is. It's the original fairing and has made in Japan stamped on inside but he needs to know what kind of plastic it is as he has 200 different kinds of plastic for welding. Any help would be gratefully accepted!!!!!!

70's stuff was ABS or Acrylonitrile butadiene styrene so assume 80's would be the same.