I would think two 3" pipes would be sufficient, have one breathing in from each side. Making/routing the piping and upper air cleaner housing in such a way that it doesn't look out of place would be the challenge. Not sure about breathing in straight wheel well air if you ever have to go through water. Perhaps an elbow or baffle to keep water out? Then again the water would have a hard time travelling 1 foot uphill to your carb.