Verify that the lines are indeed cracked and not loose fittings or blown seal on the pump.
Get yourself a blacklight (party shop), clean and dry the suspected area with starting fluid or brake clean, and in a dark area (garage with the lights out, thick tarp over the hood, or at night) start the engine and light up the area with the black light. The leaking fuel will show. DO NOT RUN YOUR HANDS OVER THE LINES WHILE ENGINE IS RUNNING!!!
Otherwise Craigslist, Ebay, or junkyard for used, dealer or Cummins for new.