ANY IDEA ON AUTO TRANS FLUID 4THIS AMC/MOPAR JEEP?

I need to add some auto trans fluid to this AMC/Jeep. I am also going to ask on the Jeep sites but I have no idea what fluid is acceptable. The trans slips and doe snot want to go move. I can see its leaking so my guess is it needs fluid. I also need to find out what kind of trans, so I can get a new gasket kit for the pan?

Thanks Dave

http://www.postal-jeep.com/postal-jeep-model.htm

This shows a 727 trans, I will have to get a better look but wow a 727????

Dave

Type F