Congrats on your purchase and welcome to the club!
All I can tell you from the VIN is it's a '88 model year, about 24' long, was built at the Denver plant (the only one at the time), and was # 8160. So basically everything you already know.
In order to figure out the model, check out the files section on this site. The original '88 brochure is there in a PDF. Make sure to look real close because a lot of models from your year and around there had 22' and 24' versions of the same model, and the only difference you can see is a pantry by the refer.
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