Glen, your life won't be the same once you've fitted your shift kit.
Be warned that the shift kit will change your life and sometimes a good thing isn't always the best:
When you come home from a ride (remembering every single gear shift in your head), and your wife/girlfriend has had a hissy fit over something trivial and promptly asks you to
"get that smile off your face or i'll remove it myself" there will be huge problems to deal with because that smile isn't going to be removed easily.
When you come home from a ride, (remembering every single gear shift and the road incline and the exact maximum cylinder head temperature on every hill climb, stored away in your head), and your wife/girlfriend has a trivial hissy fit because
you are 20 minutes late and she was worried sick about you, and tersely directs you to remove that smile from your face, there will be huge problems to deal with because the only way that smile is coming off is if it's surgically removed.
When you come home from a ride (remembering every single gear shift and the road incline and the exact maximum speed on every hill, stored away in your head), and your wife/girlfriend has a trivial hissy fit because
you are late and won't be able to make it to her sisters bridal party, there will be huge problems to deal with because she will promptly let you know that divorce is the only option.
I have gotten myself into so much trouble after fitting my shift kit because i couldn't stop riding my bike and ended up trashing so many personal appointments in my life.
One lady said to me: is that stupid bike more important to your life than i am - - - my reply was
"yes it is". The outcome in the restaurant wasn't a pretty scene...
Be warned - a shift kit has the ability to give you so much enjoyment that it should come with a surgeon generals health warning