Don't bother with the DV's plenty of high HP #'s have been made with stock DV's. But really, you should take the others advice and go with a little better injector than the 370's. And if you have time mess around with the pump; moving the fuel plate, AFC housing, turning the star wheel, adjusting rack travel, these are all things you can do for free, it just takes a lot of time to find that sweet spot. Or if you have the mechanical knowledge and the $, take the pump off and send it to a shop to have them balance it and turn up the fuel that way. Mileage is always going to be controlled with your foot up to a certain point anyways.
Ryan

Ive got a setup Im pretty happy with right now, Im running without a plate and with the afc set at about 8psi and 3/4s of the way forward.