Power steering pump failing (Leaking) Are NOS or new ones available from Chrysler?

How old is the pump and what part of it is leaking?If its the tank it self,a epoxy coating can be applied and sealed once its clean of any oil,is it a seal? or a hose o-ring?I just got a 67 dart with P/S and if you need a pump to rebiuld you can email me,Mrmopartech