Howdy Folks, Thanks for reading this. I bought a 78 GL 1000 from a guy who had it sitting in his back yard uncovered for two years. To make a long story short, the Texas weather, and owner neglect, has not done this bike good. I am fixing it up to ride daily. My problem now is that I am going to rebuild the water pump and while I am at it, I thought I would replace the thermostat. I dont want to trust the old one, I tested it with a pan of boiling water. It opens, but I think it opens to slow. and I think it might be the original. So I check with the Honda dealers in the area, and they are a bit pricey, I thought I would go to and auto parts dealer but I need a part number, not hondas. Can anyone help.