Here are some pictures of the handgaurds i installed for $30. They work great, i took them out on some narrow over-grown mountain trails today-
I mounted the same ones on the '87 with stock bars, no issues other than moving the levers in about 1/4".I have these exact same Tusk hand guards (only with the plastics on) and I have no idea how people are installing them with the clamps below the central bar on the handlebars. I always thought people were using after market bars but yours look stock. So either yamaha changed the length of the stock handlebars from 89 to 2000.. or tusk has quality control issues.