We are looking to buy a used PUP and there are a couple of Fleetwoods I have my eye on. Specifically, a 2005 Newport, 2006 & 2007 Niagaras. Current tow vehicle is a '97 F350 7.3 Dually (we used to have a 5th wheel). So tow vehicle is covered. I have concerns about parts availability. Have you ever been unable to obtain a part? What did you do to get around this? Overall, any regrets? Any advice?