Does anybody have KooK's Custom Headers how are they and how did they turn out sound and performance wise

 

I have them. I hate them and can't wait to get rid of them. They are the most non-sealing MFers I've ever had. I've used about $300 worth of gaskets and more silicone than you'd see at a **** star convention and they still leak. I've called Kooks several times about it. They've come up with all kinds of solutions. I've done them all and I still tick. All the surfaces are smooth. Mine as just a piece of ****. Mine do require adaptor plates though so they are a little more complex.

Kooks headers and Art Carr trannys are the only 2 things that I've had repeated trouble with to the point they have NEVER worked correctly. I will never order from Kooks again. Next time I'll have headers custom built.