340 HP's vs headers

Screw them all and run early magnum truck logs. 2 1/4(?) outlets and they flow great...and can be had for $50 a pair. 5% is margin of error on a dyno and header headaches are real, lots of heat, lots of leaks and lots of rust issues..oh did I day ground clearance? Last time I saw nice 340 Hi-po's ther were 4-600 by themselves. Too much, people are very proud of those logs...Now if it is a built motor, headers will add serious HP but on a stocker, niet.