I also have a 2007 340 Sundancer. Lmk if you need help! Mine is powered by 8.1 mercs. I've changed the cockpit speakers to Kicker KM6 and KM8's, added a 3 way switch set to control LED's, installed a "removable" Garmin 942xs, had the C80 LCD refurbished, replaced all canvas, orig factory made, changed the track on arch for the canvas, duckbills, vac switch, all engine maintenance, removed fuel rails, cleaned injectors, Koehler 5ECD (me almost expert in repair) and so many others to list.
