We have a 1998 Coleman title doesn't give me a model sorry it's the long one that has the roof issues of sagging and the outter plastic shell cracking and falling apart. It's the model with the toilet/shower and the large pit group seating with two king size beds. Hope that helps you all out. We want to take the OUTTER SHELL off and put an aluminum top on it, with out doing a complete re-build of the core unit. The core seems to be in excellent condition NO LEAKS now or ever on this camper so thank goodness that's not an issue. Help needed is there anyone out there that has done this?? OR Is there anyone out there that has used another medium to make a new (SKIN)?? If so any help would be wonderful. Our shell is completely detached from the inner core so to fiberglass over it won't work. Your help here on this forum is wonderful or if you want to communicate via email that's great too. My email is firstname.lastname@example.org THANK YOU ALL so very much!!!!!