Suggestion: if you do go with JTD's hard lowers, take his small trim and chunk it, go to Advance Auto parts, they have the same size trim which is FAR better and much more flexible to work into the vent openings.
Next project is to have a custom Drifter/Indian front fender made.........!!!
It's a radio caddy fairing, can be found at numerous sources. The Trike Shop in MN is where mine came from, another excellent source would be Jireh cycles ( I believe) in MO, who offered a guaranteed better price at the time. I had a Kenwood marine grade receiver in it, the CD player was defective, in the process of installing the replacement.