I think if you liked the SST on the '00, I think you will like it on the '03. I have personally tried the V-Forde and Boyeson Rad Valve back to back and prefer the Rad Valve. No major jetting changes had to be made in my case. If you are having any jet problems, go to the Keihin PWK. I have one on my '03 and think it is much better than the Mikuni as far as jetting issues. Tried the VHM head, did not like it. I have tried the iCat, no big improvement, but no loss either. To be honest, I wish I had all the money back that I spent on this stuff and just got the bike ported initially. My bike runs better than a stock bike, but it is by no means an a** kicker.