I am thinking of putting a big bore kit in my 04 bulldog to the 124cc. I wanted to know what price I am looking at and where is the best place to buy one
If you haven't call S&S with your engine number and see what they offer. That will get you a parts price. Labor and any welding and machining and assembly will add to that. Cheaper if you pull the motor and can tune it yourself after reinstall.
I am thinking of putting a big bore kit in my 04 bulldog to the 124cc. I wanted to know what price I am looking at and where is the best place to buy one
I don't think that will work. I believe the S&S cylinders are already stretched to the max to fit the engine block. The 107 is a 4" bore engine. The 124 is 4 1/8" bore engine. Completely different engine blocks. I think your only option would be to stroke the 107 to 113. That requires a lot of work. It would probably be cheaper to just buy a different engine. A buddy of mine just bought a used S&S 113 with 8k miles for $4k.