I used to run a dual stealth pump style setup, no complaints from me about it- it did what it was supposed to do. I fed the rear pump with a half inch feed line with a dieselsite reservoir spacer block to get the rear pump fed from a lower spot on the reservoir instead of the stock sensor location which is 2/3 up the reservoir. I wish I didn't sell them. Took it off and went to a gen 3 for idk what reason and never liked the crappy idle after startup then sold the performance parts a few months later. Im looking for another twin stealth/4 line pump setup again actually. I know the quicker pressure will make a snappier more responsive driving truck