appears 16/44 combo gets the full use of the existing swingarm. I'm running a bolt on extension as well, but still use the 16/44 because since I'm used to it and want to change one thing at a time. I also run the Micron Serpant and am very happy w/the results. 153 SAE bone stock and 168.6 after pipe and EMS - Stock air filter. Went to another dyno and got 175 SAE where an '01 with Akro, custom map, K&N's, Muzzy fuel pump, crank case vac pump upon other mods only netted 177. (different day, so who knows)
Put a clone of King's NOS system on and got 258! Seems to love NOS!!!!
fastestr1 runs a step Hindle. Helped him install it and it was a breeze. No fit up problems at all and he seems happy with it.