I got to looking at the differences between the two F-311SR's that are for sale... Well, one of them is still for sale..
The decals are very different between the two units, even though they are both 2003 model year.
Here's the one at Colton RV.. Notice the location of the side Sunline decal and the orientation of the decals on the slide. Also notice the only decal on the front cap, is the Sunline decal.
Now, look at ours...
Now, look at the back of the unit in the picture above. Then, look at the back of the unit in the picture below..
There are VERY distinct differences, between these two units. One other thing.. Note the "Classic" decals on ours. They are not on the Colton unit.
Inquiring minds want to know why ...