Welcome, Chris! Looks like you made a good airplane choice. Cs are the best!
I can't help much with part numbers off the top of my head, but rebuilding the carb heat box will really help engine management and cruise speed. I rebuilt mine, replaced the muffler with a hand-sized hole and did some touchup repairs on the doghouse and my indicated airspeed increased by 10 mph at altitude and 15 mph down low. Just Tuesday, I made a fuel run after work and was showing 155 mph at 1500 msl running 23"/2500. Ain't Mooneys great? Your time will be here soon.
Please find a good, experienced Mooney instructor rather than a good instructor with "some Mooney time," it will pay off greatly. Check into the Mooney Aircraft Pilots Assn [www.mooneypilots.com] and see when their Pilot Proficiency Program will be out west [it moves around the country 5-6 times per year]. It's a great way to quickly get comfortable in your airplane, in 2½ days of ground school and 4 hours' flight time in your airplane with a very experienced Mooney instructor.
Welcome aboard, hope to see you around!