i changed my lift pump and it was pretty self explained the easy way, is to take off the filter housing and the banjo bolts and watch for them gaskets they are easy to drop i did not buy new ones i just used the old ones and it was hard to seal. i got the pump from cummins it was 155. 00 including the 7. 00 wire harness ihad to buy because my pump was original that did include tax. the hardest thing was lining up them washers and priming it i just cracked the main pump lineon the injector pump and bumped the starter it gives you about 10 seconds of run time and tighten the line and crank it up it will turn quit abit but when i got it started it up my pump pressure went from 8to 14psi at idle to 12at 60mph up from 6 and from0at wot to no lower than 6 psi no mater how hard i pound on it i am getting the larger banjo bolts and washers from genos garage on monday hope this helps someone please reply with your comments thanks