i have a 98 ITR with a peakboost turbo kit on the way, im looking at 2 large exhaust either the HKS hi-power muffler to custom or kteller 3" piping, or a Greddy cat-back Ti-C exhaust (70 or 80mm)... lemme kno what you think would be best for my setup and the best sound ext. thanks appreciate it!

 

Have you considered the Skunk2 Megepower RR exhaust?

 

^^^that looks sexy!

 

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My only experience is a friend who has a 3" Thermal system. Sounds awsome!