Re: (New here) 86 2550 restore project..
To replace your rubrail there are many sites on the web or pretty much any marine purveyor will carry it - here's my personal favorite:
http://www.tacomarine.com/
Removing the track is pretty straightforward. Simply drill out the rivets and replace with the same or use SS screws. Do remember that the screws that are presently there secure the hull to the superstructure. Best just to leave them alone.
Can't offer you much help on the dash. I suppose you could strip and redo it.
Post a pic of it.
If for some reason you want to restripe here is a good place to find them, along with a lot of NOS for Bayliner parts :
http://www.greatlakesskipper.com/
Good luck with your project. Try and get some pics up so us nosey guys can take a look.
jerry