This might be worth a look.
“I have owned this car since 1993 , has always been under cover and rarely driven. The paint is 6 years old and still shines. There is no rust on this car. The custom cloth upholstery is like new . The chassis is original and has been rebuilt. The V-8 Oldsmobile engine is a mid 50’s 324 cu in 340 lb torque and runs very strong. The automatic transmission is the 4 speed hydromatic of that area and shifts clean and hard. This is a fun car to drive. There are still a few odds and ends to contend with but it is road worth and starts easily. You are invited to view the car before making offers. If this add is still here it is still for sale. The top is new as well as the side curtains(window).”
Thats a cool engine and transmission swap for this old jeepster!