anyone have a carb for sale, not stock, like a pwk 35 or should i go bigger, I tore my motor apart and found that mine is not bored, so all I got is the pipes, 13teeth , no lid,K+N filter, and soon to be reeds. What size carb should i go with

 

FTZ Racing sell's a really good 41mm Smooth bore Mikuni set up by Sudco Racing,really good response from the carb,I had one on the Zilla before I went bigger,and it worked real good on it.

 

but is 41 too big? I honestly have never switched carbs so I don't know what size i need or anything. Everyone says you need a bigger carb for the full effect, so what size do i need?