The old trico wiper blades were/are still used on the MLVW. I believe they are 11 or 12" long. You can find the same design bladfes as short as 4-1/2" long. Have a look on ebay for M35 wiper blade, or M38A1 wiper blade. If the blades you get are too long, you can cut them down with a dremel tool with cut-off wheel.
http://www.ebay.com/itm/Wiper-Blade-...5R6DvU&vxp=mtr
http://www.ebay.com/itm/Jeep-Willys-...5X0xFj&vxp=mtr