Quote:
Originally Posted by Iam Broke
The difference is the ls3 system has an X pipe and the L99 is a resonated h chamber. Yes, it will fit.
I had the X pipe and toned it down some by replacing the midsection with the resonated h.
When I talked to MBRP they told me that is the only difference between the two catback systems.
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+1. The LS3 system is louder of the too. Guys planning on running headres will ususally order the L99 version to keep the volume down some.