its not a dc i'm almost sure its a megan racing downpipe, yes, this downpipe with an additional high flow cat/ test pipe WILL mate right up to this catback exhaust no problems. it has literally never been installed. u can look inside the piping it has zero exhaust residues, nothing

 

ttt

 

check pm

 

Bump for a nice exhaust. Note the flanges are thicker than the HKS

 

indeed they are! i was pretty suprised by the quality of this thing, when he told me he got it off ebay

 

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solid buyer for the catback, but the downpipe is still available

 

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