Kooks

[Hugo1]

What's up guys looking for some advice .
Thinking of purchasing kooks long tube headers 1 3/4 x3" and o/r mid-pipe 3"outlet 3" 2.5 outlet and Borla stingers catback. The car currently has a 2.3 whipple making 620hp would this combo be good for my setup. Or should I purchase 7/8 headers.?? Thank you

 

[04ScSaleen325]

[video]https://youtu.be/eDi3uy9cF-w[/video]

here the same setup but with 7/8 headers

 

[sonicobra500]

Hugo I have the 1-5/8" kooks with off road X pipe and Stingers and it sounds BADASS!!!!

 

[Stage 4.6]

Hugo I have the 1-5/8" kooks with off road X pipe and Stingers and it sounds BADASS!!!!

What kind of gains did you achieve with the Kooks? I just purchased similar setup to Hugo1, except I got the 2.5in catted x-pipe