UPDATE: Some additional pics added. 

This chassis appears to have front frame horns and may have a CJ-2A transmission crossmember side-frame-mount setup. Given it’s been lengthened and located in the Spokane area, I’d bet this is a lengthened CJ-2A chassis (or CJ-2L as we’ve come to call them).

https://spokane.craigslist.org/pts/d/loon-lake-55-willy-jeep-chassi-and-cab/7531235552.html

“WILLY JEEP … have questions we dont mind answering 240 four, four 0 21 nine7 any time or 509 two 51 eight3 1seven”