Changing my throttle body

I want to get a bigger TB but don't know what size to get. If I change the tb size do I have to change the size of the pipe from the supercharger to the TB? If I dont' change the pipe wouldn't that defeat the purpose of getting a bigger TB? I don't understand. Please help.

I think you'd do fine with a 65mm or 70mm throttle body. At those sizes, you won't have to change the size of the discharge tube.