Hey Guys. I saw a new Chaparral 22 ft boat at the dealer tehotehr day and it has a VP SX drive. But what caught my eye is that it looked very different from my SX. Slightly different shape and it had and exhaust above the prop much like the DP (in fact it looked like a DP unit, but i just has 1 prop. I looked at the drive and it has SX-A stamped on the serial plate. Just wondering what this drive was and what makes different from the standard SX. thx