On my stock '95 PS190, TBI my fuel pump (electric), is in-line at the rear of my motor, between the stringers. The pump is $250.00 new. My system runs a return line from the pump back to the tank, but only 1 line from the pump to the TBI.
It's the same pump that was put on a similiar vintage LT1 for my boat.
If one day you're asked:
" How did you spend your time here on Earth?"
Will you say:
"I kept a crabgrass free lawn"
It's time to SKI.