I had 204's put in my 03 heritage trike conversion along with a reflash, I would have loved a dyno tune but no trike capable dyno around. Lots more mid range torque which is just what the trike needed. Before the cam change the thing would not pull at all on the freeway in high gear, but after it has nice amount of power.
1982 FLT Virgin unmolested barn find.
1983 FXDG 80th Anniversary AKA Willie G Disc Glide, 10.5 to 1, Andrews B grind, 2002 Fat boy carb, Barnett Clutch, drag pipes.
2003 FLTSCI Black and Silver converted with Motor Trike Kit plus HD tour pak, 88 inch, HD 204 Cam, Vance & Hines mid shots.