Which carb?

[Dustyn2007]

Hello guys just built my fist motor went with the malossi cast kit from red I have v8 pipe with stock carb with 102 jet koso variator 2k clutch and contra spring 9 to 1 gears will it benefit it quit abit to put a bigger carb? If so which kind and size Rite now only runs 52. Mph and want more low end went 43mph with just variator before the bore

[paulpauly7]

id run a 21 oko if you want throttle response and down low power