I just did a ppump swap to my 92 dually 5sp. im gettin a p-pump, 3500 gov spring, 2nd gen lift pump, shaved fuel plate, timing bump, pump work, turned up little, 250hp injecters.
4.5in exaughst.

how will this run when done and around how much hp should it be laying down.

 

id try the 2nd gen page. for advise on P-pumps, you might get a better response from someone who has a p-pump.