welcome to the HKS exhaust club..
HKS is probably my favorite JDM tuner.. besides NISMO but im a little mad at them right now... so yeah im team HKS for now
id put that HKS emblem on the opposite side of the 370z logo on the rear... man i didnt get one of those
oh and not sure if the 370z version will do this , it might just be the pretzel bends in the GTR ( and im going to try to make this sound the least homo erotic as possible) but when it gets hot the tips extend out and extra inch or so.... then when it cools down they go back to normal
the first pic is regular 2nd is heated up