Powered by Studebaker.
https://farmington.craigslist.org/cto/d/1956-jeep-cj5/6767864131.html
“1956 Willys Jeep CJ5. Six cylinder Studebaker engine, three speed transmission. Engine was built with new block, pistons, rods, head, carburator, and many other new parts. Engine balanced. Approximately 4 thousand miles on engine, rebuilt transmission, transfer case, and all new brakes. 8000lb. Ramsey pto winch. Looking for a 1957 or 1958 Chrysler or Desoto. Might be interested in a trade.”
https://farmington.craigslist.org/cto/d/1956-jeep-cj5/6767864131.html