The seller has done some research, discovering that this started life as a 2×4 for the Navy, but was then was refitted to be a 4×4 for the Forest Service (perhaps the Parkway Conversion was also implemented at that time?) .

https://www.facebook.com/marketplace/item/689434258375917/

“1961 Willys wagon 4×4. 4 speed with a Chevy small block. Vehicle has been stored under cover for the last 5 years until recently. There is some rust shown in the pictures. Hasn’t ran in 3 years and the rear brake line is bad. Does come with a tow bar and lights. Here’s a little back story on the wagon. Researching the serial number from Kaiser/Willys website this was a 2wd drive naval personnel carrier that was built at the end of the Korean War but never left the factory.

The government had Kaiser repurpose it for the forest service they transferred the body to a 4×4 chassis and sent it the forest service in Leavenworth Wa. I purchased it from the grandson of the man who bought it from the forest service. The original engine failed and was swapped out some time in the the mid 80’s. I don’t really want to sell but the wife wants a new house. Open to offers. Please don’t make a low offer I won’t be giving it away :-)”