Dicken around with my 79 maxi hi torque 2hp and in reviewing the engine specs it looks like all hi torques came with 12mm bing carbs and 14 mm round intakes. Wondering why they never put 14mm carbs in these. I have noticed the hi torque motors have a little better acceleration (almost 2 speeding) but wondering if I can use a bigger carb with the stock hi torque head and if I can keep the hi torque head if I choose to kit it (airsal 65)? Thanks