exhaust (purchase, a piece at a time)?
If you are thinking of going with the Helix DP, you might want to read this https://www.i-club.com/forums/engine-power-ej20t-pre-2006-wrx-jdm-60/helix-downpipe-install-good-bad-ugly-65286/.
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Car Info: Corvette Z51
Uppipe, downpipe, catback, in any order you wish. Recommend Helix for up- and downpipe, for catback there are many good ones: HKS Hi-Power, Espelir JGTC500, Greddy Evo II, etc. Do some research for other noteworthy models.
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