Actually it looks like a bondoooood kombi. No vents in the back, and bond'od windows
Sundial, KamperKit, and RoadRunner were campers available through dealerships that were not westfalias. From about 58 on, Vw's went to distributors then dealerships, instead of straight to the dealership. Westy's were super popular but the distributor could not just order 100 westys for his 6 dealers. He had to order 20 westys, 20 deluxes, and 20 commercials (I'm summarizing) so this left a plethora of commercials ( panels and kombi's)
An enterprising family decided to buy up the commercials at a discount, outfit them with camper kits, and sell to the dealers that couldn't get enough westys to supply the demand. Same family, different branches, owned the major non-westy companies. For the most part they are the same patterns, with a few differences between them
Riviera was almost always in the pnw, Washington and Oregon. Sundial was northern Cali, KamperKit was so cal, road runner was a little further east. Almost every sundial is a San Francisco or Long Beach delivery.
A kombi of these brands is way more desirable. I had one I bought for like $800 drove around for a year and sold for $8k. In the 90's.

This was my 66 kombi based walk through sundial. My first bus. My friend had a pearl white 66 KamperKit. Identical except his interior was teal, mine was red. His wood paneling was darker than mine.
If its complete, worth more than a kombi in the same condition. Not complete, worth the same as a kombi in that condition.
I know nick loves my life story and history lessons, so I made it extra long in case he is reading. It took me a long time to research all of that when I had mine, so I thought I would share what I found. There are still plans out there today to remake the kit, someone found the first guy and the first plans and scanned them. They are actually more comfortable than a real split westy.