I just bought a 2012 180Sp and can't wait to get it out on the water. It is still at the dealer as part of the deal was that they will install any upgrades or accessories w/o charge. I have so far added a GPS/Fishfinder, Depth Finder, Wake Tower Speakers and Amp, Wakeboard Racks, Speaker Ring lights, cup holder lights, underwater lights and Stereo remote for the swim platform. I wanted to add the RIVA Stage I performance upgrade kit and an upgraded impeller. I spoke with RIVA and they could not recommend what impeller to get and if the kit actually made a difference. Has anyone upgraded to this? If so, what impeller did you purchase and was it worth the upgrade and money? Thanks for the help!