Droped my car off for header and motor mount install!!
I have done a search and I cannot find anyone with a dyno of lt headers, ory and there stock exhaust The loudmouth depends on if you like loud and raspy exhaust or not. Its a personal preference, listen to some sound clips on ls1sounds.com or youtube.
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good numbers, esp for a mustang dyno and ls1 intake.
good numbers, esp for a mustang dyno and ls1 intake.






