From what I can see both have an m16-1.5 threaded port...in theory I am wanting to see if the lines could be bolted onto either pump. The Jeep Wrangler I am working on the pump lines for its power steering will bolt onto the MKIV as I have seen it on another guys build. I have a PS pump from a MK2 and don't want to buy anymore if I don't have to. Also I don't want to make a bracket for the Jeep pump to fit on the VW engine.