The problem with these pigs is that they are too tall and too heavy.
The block height and weight is about the same as a 460. Some of the intake manifolds have the carb mounting flange below the top of the intake runner, so the air/fuel had to go down turn up to the head, then turn down into the chamber.
Tolerable for boats and irrigation pumps, but it sucks if you're trying to make power. At least, if you use one, inject it so it's just moving air and you're not slamming fuel into the walls.
My feeling though, is if it's as big as a 460 on the outside, it needs to be as big as a 460 on the inside too.
My favorite application would be to hold aforementioned boat in a stable location........
