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Headers
I'm looking for help in evaluating the different headers available for my '88 Spider. The IAP (and similar) headers are the least expensive, but discolor easily, can be a source of additional heat in the engine compartment (I would probably get Jet-Hot coating), and, from what I can see in photos, the pipes aren't equal-length.
Headers from Sprull or Sperry (if Sperry still makes them) are more than twice the price of IAP, but look like equal-length pipes. Also, because Sprull and Sperry are Alfa performance shops, I suspect they've put more R&D into pipe length, material, etc.
Any thoughts/experience with these different headers - performance gains, installation problems, durability?
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