Anyone have any tips on how to identify an aftermarket exhaust system on a G coupe? I think it's an HKS, but there is only one bolt near an exhaust tip that might say "HKS" on it. It's a full exhaust, no CATs, double stacked dual exhaust, and blue heat stained exhaust tips. Help!?

 

show a pic

 

Thread is worthless without pics.

 

PICS would definitely be helpful.
Anyway, if the end caps of the resinators are welded on then I beleive it is authentic. There's a thread on here somewhere that shows the differences between the true HKS and replicas.