When I ordered mine .I originally ordered it with the Express Tube and maxed out the HP with a 150 . By the time I got home I decided I wanted the SPS .Which was not that much more with some of the options I had ordered on Express were standard on the SPS .I went back to the dealer changed the order to the SPS ,but forgot to max out the HP with a 200 . After the 1st season I decided to upgrade to a 200 . Dealer offered me a very good price on the trade ,but as it turned out controls also had to be converted from manual to digital and that meant removing the wave shield . All the labor involved made it not cost effective and would have been less to just trade and buy a new boat .