Twin Turbo - equal or unequal headers?

[BilLster]

i was running stock headers with a extension and bought a set of equal length shorties and peak hp didnt improve but torque and hp were up over the curve untill the lifters gave out.

when i put the new motor together we put in solid roller lifter and
let a friend experiment with headrs on the dyno.

what he came up with was a equal lenght header full size from a dragster with the collector cut where the turbo flange neede to be

low end boost increased dramatically and witht he lifters hp was up to 712 but it was the improvement all over the curve that impresed us both (even with the solid lifters tq and hp increased when the custom headers were installed) problem is they wont fit
in the car without some rerouting so he's building me a custom set for $300.00 bones)

my old ones were like these i borrowed the picture from my favorite turbo site. toohighpsi.