Not comparing an Alpha to a G4, my simple statement is cat is in an old chassis designed to fit both the 4 stroke and 2 stroke power plants, you don't think they can easily improve on that ? It's why Cats are the easiest sleds to drop weight on. Don't fix what isn't broken ? Then you wouldn't have the Alpha skid. I'm looking forward to what Cat comes out with.
The chassis isn't the same between the four stroke and two stroke. Over structure is completely different. Depending on model tunnel is different. They share a bulk head. The old wide plastics were designed to fit both. So many misconceptions about the Cat chassis based on old info from a major fail of a model year in 2012.