You will likely need a fuel line pressure regulator because the FI pump
likely puts out too much.

Lots of carb engines need a fuel return line to help stop vapor lock.
Your FI engine might have one as well.  It is important on some FI
systems as the returning fuel goes to a cooling jacket on some pumps and
fills up a baffle area so the pump still has fuel to pick up when the
tank is low and you corner.  

My Jeep for instance has a filter just before the carb with 2 outlets on
it.  The center one goes to the carb, the top one goes to the return
line.  It is important the return line is above the carb line to avoid
gas siphoning back to the tank when it sits and to let air go back if
the gas vaporizes from heat (vaporlock).

I think I would put the pressure regulator just before the filter.  The
carb should say what line pressure is needed.

Is your ignition system tied into the FI?  You might need a stand alone
distributor/spark system or it might already have it.

Just some thoughts for you...

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
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