I'd highly recommend the HV3 insert. I have a L67 bottom end & heads, and L26 lower and upper manifolds (with HV3) installed. I could only turn up the boost to 9psi because the MAF was almost maxed out. Had 42# injectors but had to swap them out for 60# because the duty cycle was getting a little high. With 60# injectors, fuel logs, fuel pump rewire kit, and high flow fuel filter, my (new) stock replacement pump is doing just fine. Still have an upgraded one but my tune guy said there was no need to install it (until I up the boost). I installed an intercooler with in/out temp sensors, and when I'm raging on it, the temperature drop is 80-90 degrees. I know a guy here in the Twin Cities that will street tune it. Haven't gone to the dyno yet. I wanna turn up the boost first
