my ls/vtec is pretty much built, skunk stage 2 cams, usdm type r pistons, shotpeend ls rods, new bearings, p+p head, skunk2 intakemanfold portmatch to the head, bored out to 70mm/ throttlebody.. my machineshop did not fully balanced my rotating assembly and therefore will not be reving no more than 7500 rpms.. i want to maximize my hp output in that revrange, what header do you guys reccomend? tia

 

4-2-1 DC should do okay.