Found this in my dad's garage, these are the only two pics I have right now because it is enroute to my house via Fedex. The only thing we know about it is he bought it at the Back to the Fifties swap meet in St. Paul 25-30 years ago--we think. Why sideways carbs? What's the big hole in the middle for? Notice the rectangular carb flange. A 94 or 97 does not fit despite how the drilling looks. So what kind of carbs were on it? The "balance tubes" or whatever they are underneath are very crudely done. And why? Any help will be appreciated.