I have just picked up my dc sport jdm 4-1 header and was wondering what gasket to use on the collector side. Is it like the jdm oem header were it is a weird donut or is it a flat gasket like on a stock header/cat...????

I only ask cause I am installing soon and don't know..

Thanks for any info..

 

http://www.inlinefour.com/25incolflan.html

 

thanks very much