I got a 95 fxstc that has stretched gas tanks. I got em off Craigslist, and don't think I have any way of figuring the brand. I had to trim the original dash to fit, as the contour was different.

Has anyone tried to put a dyna dash with a tach on a softail? I'd like some other option than what's on there now.

 

If the contour is indeed different you are screwed. Usually the contour is the same, but the bracket that the dash mounts to has to be re-shimmed (somtimes a lot) to work with aftermarket tanks. With a little work virtually any Harley dash can be "made" to work. Here's a cateye, that says it won't fit flatside tanks, on stretched flatsides.