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Old 03-02-2000, 03:03 PM
Lou Nielsen Lou Nielsen is offline
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Join Date: Jun 1999
Location: Barrington Hills, IL USA
Posts: 136
I've looked into headers for the 500E. Equal lenght stainless headers from RennTech are aprox $5000. I've also spoken with an exhaust fabricator / tuner. He felt that it could be done with great difficulty with little to gain for the money. His price approx. 2000-3500 depending on materials of construction. Per RennTech, no real horsepower gain from the headers is to be had until you move to a 6.0L motor.

Improvement in the flow of the stock manifolds is a possibility through extrude honing. I would experiment with some new (not installed) manifolds before I would do anything.
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