Quote:
Originally Posted by Risu2112
With the exception of the headers I believe, not sure if your counting that with "piping" or not. The headers need to be factory, or CARB certified aftermarket.
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They don't have to be factory if you can document that they wouldn't fit in their original configuration. But you will have to make sure the catalytic converters are in the same location(s) as the OEM manifolds (by location I mean same distance from engine so they warm up as quickly as stock). It is definitely more work (and some referees will discourage you), but it is possible.