90 ls megan header, what bolts to header flange?
 

I bought this header but it has a weird pretty flat flange not like the normal doughnut gasket style. Im wondering if the cat bolts directly to the header or is there a pipe in between the header and cat?

Re: 90 ls megan header, what bolts to header flange?
 

its most likely meant for a bolt up style cat/test pipe.

Re: 90 ls megan header, what bolts to header flange?
 

problem is i went to a parts store and the cat they sent was for the doughnut style