I have an opportunity to purchase some early 1990s vintage Suntour Radius drivetrain equipment for a vintage Lotus that I am restoring. It has a good frame but the components are basically junk. What grade of components were Suntour Radius? Were they Suntour's version of Shimano's 105, or lower or higher? I know that Suntour may pre-date many of the members of this forum but I am hoping that maybe one of the old timers will know.