I'm not sure if your coach would have a model # plate by the door. That didn't come until '89 or '90. However, it would be on the sticker that's attached to the aluminum in the left front corner of the coach about half way up.
Otherwise, if you have trouble viewing the brochures, post some general locations of things inside your coach and I'll try to figure it out for you.
2007 T-286SR Cherry/Granola, #6236, original owner, current mileage: 9467.8 (as of 5/26/19)
1997 T-2653 Blue Denim, #5471
1979 12 1/2' MC, Beige & Avocado, #4639
Past Sunlines: '97 T-2653 #5089, '94 T-2251, '86 T-1550, '94 T-2363, '98 T-270SR