can anyone tell me if the classic one piece saddle will fit the roadster ???

I took my Corbin seat from my 2007 Classic to my 2014 Roadster. I did have to use the appropriate mounting screws but it works fine otherwise. I also have a luggage rack on mine. No issue going from one to another in my case.
 
done it,it fits straight on as long as you have the catch plate aswell.
many thanks to all who helped out with this problem. cheers.