Don’t those hooks suggest it is an MZ-2?
“I am selling this family heirloom from my Father’s estate. Runs and drives. I have receipts for every piece of equipment in this piece that my Father restored himself. This vehicle has participated in many Veterans Day parades, as well as been displayed at past Marine Birthday celebrations in Tulsa. I want this piece to go to someone who will love and enjoy it the way my Dad did. Please contact me for any information. I do not need help selling this, nor am I interested in trades.”
http://wichita.craigslist.org/cto/5478663973.html
Hard to tell Dave without seeing other features. The data plate should read Navy instead of ORD. There would be an oval hole in the bottom of the glove box. There would also have been a hole in the floor behind the transmission for the pto belt to pass through or the cast iron generator mount still there. There are other features but too many to list.