Well, this is what I found, and may consider using. Maybe yes, maybe not? On the fence. The floorboards are one I took off my 1200 in the '90s, but there are some nice chrome pieces there too. Just playing with ideas. Might cut sections of FB mount tube with long straight and curve on end to go under trike beside exhaust tips, weld or secure other end to hitch drawbar. If I used the short pieces like nurf bars, I'd just cut and weld to extensions that would attach to trike rear frame underneath.
Maybe I scrap the idea.