I'm thinking about adding a external fuel tank to my 93 GL1500 CSC trike and was looking for advise from you all. How much does it cost and where do I get it and how hard is it to do your self. Mechanically I'm very capable and have all right tools. If any body has one laying around I would be interested in it also or sales them. Thank for all or any help guys on this one. Here is a pic of my trike.