I've got a 95 Mystique that I'm dropping a 2001 3L into. I'm trying to use the whole new motor, but I'm having some difficulties getting the old return-style rail with the fat injectors to fit.

My end goal is to fit the 3L LIM with 19# injectors.
I figure I'll need to splice the new injector plugs into the old harness, then take the new rail and run feed and return fuel lines to match up with the quick-connect ends of the old rail, plus the pressure regulator.
Wires are easy, especially if Brad chimes in with the correct polarity

but I just don't know what to do with the rail. Specifically, the practical aspects of running fuel-compatible hose and making connections that are guaranteed not to leak.
I'm also working on machining aluminum adaptor plates to fit the 2.5 LIM to the 3L heads, but I'd rather not go that route.
Any help is appreciated.