Hi and Welcome!
If you can PM me the VIN, I can confirm it is a Sunline and the year. Once we prove out the year, we can back into the model number from the brochures in our files section.
Assuming it is a 1979, look at the 79 sales brochure in our files section. Match up the floor plan to what yours looks like. Look at the top of the forum screen for the words FILES,
When logged in, click the tab Files and once in the files section, look for brochures. Scroll to 1979 and download the brochure.
The camper does have the Sunline construction look to it.
Hope this helps
John
__________________
Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC
Google Custom Search For Sunline Owners Club