good evening gentelmen
i have a Corvette c6 with borla X-pipe and cutback
Camshaft 584 602 117
and a balley harmonic Balancer Underdrive Pulley
after tuning the car gave me 408 Rwhp and Torque 398
very soon i will add headers Long tube
what i need is ,, what will be the different if i installed LG headers or SLP or Kooks ,,
are they all the same peformance ? or its just the quality
and how much extra horse power i can get if i had the headers
and do i need Tuning after the headers or its fine just to keep it like that ,,
and i have another question about the Cluch
for a car less then 500 Rwhp what can be the different if i bought spic stage 2 or 3 ?
many thanks

Cheers