I used the front fender that was on my cx. I just cut the mounts off and welded some pipe clamps onto the springer seat bar, and then bolted the fender to the pipe clamps. but you could just make some struts and attach it that way.
Get a trailer fender from Cabellas or other various out door or farm supply stores for around 30 bucks, Weld a new cross member flush with the frame right above the rear shock mounts. Cut off the old ugly cross member. Then modify the fender to the shape you want. Just use the same holes for mounting.