FYI I posted some questions, and successes, on mounting a bigger Backwater Performance Carb on a Vanguard Mud Buddy. Not sure how many of you have shallow drives, and have thought about doing the same thing. Maybe what I found will make your lives a bit easier. It is in the powerboat/modifcations forum.
If the instructions had been more clear, I could have done this in way less time. But, if I can get her to run smooth, that is behind me.
Good luck this fall, and watch out ducks,