Javier - I've been looking at a similar list, here's my thoughts:
1. Phil's Centa Drive - figure i'll get this done at about 10K miles, which seems to be the safe life expectancy of the current rubber rollers. I might try Phil's suggestion of getting silicone grease on them before then.
2. G56 exhausts - I have a set sitting in my garage, will fit these over the Christmas break and share my thoughts.
3. Ohlins shocks - seem to be eye-wateringly expensive to me. I would certainly be interested to hear what the state-of-the-art lower cost alternatives are.
4. Upgraded cams - will try the exhaust first. I'm not unhappy with the power as it is, and I feel more comfortable keeping the engine stock as S&S aren't making them any more.
5. Empire kit. No thanks. By all accounts these make the biggest difference on the pre comfort-kit cars, and there are stories of them breaking.
6. Phil's bevel box kit is also in my future.
I am also considering Emil's various kits, better oil cooling seems a good idea to me in a hot climate. You might look into these.
