94 MM 2.4 L, Need what adapter for a fuel Pressure gauge?

Ok I'm trying to track down a fuel pressure problem with my truck and the FSM says there is a special adapter to hook up a pressure gauge. Anyone been able to find these? Or an alternative method?

by the time and money it takes to get it hooked up it is cheaper and quicker to go to ebay and just buy a new fuel pump

Rockauto.com is also a good source for new parts. Good luck.!