Go to any dealership - they sell the tubing. Buy 4 or 5 feet of it I think it is a $1 a foot. I know I could not believe it was that cheap either
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Then disconnect the existing lines, just push in on the red plastic washer on the fittings where the tubing enters the shocks and also on the air connections where the schraeder valve is located. Just cut and replace those lines - you can run the air line under the seat to ther other side of the bike easily and just use black zip ties to hold the lines in place.
Mustang makes a fender bib for $30 that will cover your fender and hide the washers and connectors. It matches the trim on the seat and looks really good. I have a Mustang seat I bought this summer and bought the fender bib for riding solo - the only hassle is you have to remove the seat to remove the fender bib but it does clean up the bike nicely.
I don't have pics because I bought another Corbin and have it on the bike - the Mustang seat, backrest and fender bib are in a box on the shelf so if you want I will shoot some pics of it for you or just go to their website it is listed there.
I agree with Don the showa shocks have ALOT of room for improvement - I just rented a 09 Road King for my brother to ride on a 3 day trip he was in front of me coming over Mt Saint Helens and got the hell beat out of him. I was behind him with my Bitubos and AK-20s and the ride was rough but not uncomfortable, he even commented about how bad the road was. This is the first time I could really see the difference in the quality of the shock I knew the ride was better but this was a true comparison and the Bitubos handled Great!