The thread below has some info about how to get the correct orifice size, how different return orifice sizes affect fuel pressure and which suppliers have ones with the orifice. It also mentions the correct ones may possibly be identified by having INLET OUTLET stamped on the can.

RealWing, is your's stamped that way?

https://board.moparts.org/ubbthreads/show...;gonew=1#UNREAD

Last edited by moparfan53; 06/18/12 11:21 PM.