all you have to do is make a "igloo" for the carb to seal it from any water getting in it and hook up your snorkel from there. I was watching extreme 4x4 a while back and they had a segment theese guys who raced in mud. there was one guy who had a coffee can over the carb, i dont know how he sealed it but it worked.... i wouldnt recommend going that route, but the options are endless