Good advice, buy the fitting!this is a lift/boost pump, mounted as low as possible to push fuel to the mechanical pump. its a low wing thing.fi have that squirrel nest just fwd of the selector. you may want to get the 90 fitting as bending the last 90 before the pump has proven difficult for some.http://www.aircraftspruce.com/pdf/2008Individual/Cat08258.pdf i did it without it but i have one in the drawer.
pn 04 05800 a whopping 4.95