Your VIN does decode out as a 1987 model camper. The model number itself is not in the VIN.
We do have the 1987 sales brochure here on the forum in our files section. There are 6 models in the 87 brochure that are declared as 22' 7" long in the Satellite series.
All 6 have different floor plans. Since you know the league of length, ball to bumper, and Sunline declared it as 22' 7", then you just have to back into which floor plan aligns with the model number. Hopefully the original floor plan is still intact enough to sort this out.
To get to the files section, you need to be logged into the forum.
At the top of the forum are tabs, look for the word "FILES" click it.
Once into the files section, scroll down to the "Sunline Brochures" section. Go in there and find the 1987 sales brochure and down load a copy.
Curious on how you make out. Please post back.
Hope this helps,
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
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