Just went and bought a 2003 Triton TR21 with a 250 Merc Pro XS. I will be selling my older 2000 TR20, just wanted a little bigger boat with a little more speed on this huge Delta. Have a question or two. What prop are the guys running with the same model and motor? And, I want to take my Merc Monitor gauge out of my old boat and install in my new boat. My older boat had all 3.5 inch gauges just like the Merc monitor. The 2003 newer boat has larger 5 inch dia. gauges. The tach gauge also has the trim gauge inside of it, and I like it. I was thinking about plugging the speedmeter line and pulling it out.... and placing the Merc monitor in that spot. Do they make an insert that will cover the 5 inch space, and accept the 3.5 inch gauge???