Motorcycle Repair: S&S carb kits, jp cycles catalog, extra power

Question
Okay looking at the good ol JP cycles catalog and came across these carb kits. There are some options and I wanna get your opinion. For 475 bucks I get a super E carb, manifold and air cleaner. Option 2 carb and a/c $386. Or carb only for 268. What would you do? 06 883l and stock everything. How much extra power do you think I could get with each option? If I go option 1 all I would need then is to change out the stock mufflers right? Or should I change the pipes too?

Answer
You need to get the complete kit, otherwise you cant mount it. It will not mount to your intake manifold you have on there now.
You dont have to change the mifflers at all if you dont want to. You just jet the carb to what you have. If you are looking for more performance though, you can change the mufflers. You should get about a 10% increase in horsepower
Good luck and happy riding
Mike