generally speaking, 99 cc allure is a nice coach with a decent floorplan. the exterior clear coating above or below front windshield and the area above the top horizontal line to the rooftop all around is prone to being peeled. there is nothing you can do except to sand off and repaint those area, provided other areas are looking good. To do that you are looking at 1500 to 2 grand; or you can repaint entire coach for proximately anywhere between 7000-20000 depending on where you go (varies huge).
the plexiglas was from manufacturer as an option when new, trust me it cost money. It keeps rock dings/chips out of way. what you are seeing is probably yellowish which looks bad. one thing you can do though - take the shield out, an easy job, buff it with rubbing compound (polishing machine is about $20-30, and you can get rubbing compound from most auto parts stores), it will look clear again.
2000 Country Coach Intrigue 40'