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Discussion Starter · #1 ·
I have a 1975 280 that is basically stock except for a bigger throttle body, and a ported head. I was thinking of putting an aftermarket exhaust system on it. Would I gain any performance with headers and/or exhaust modifications? If so the Monza system runs around $400 for the headers and muffler. Is that a good one?
 

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Discussion Starter · #6 ·
The previous owner had it ported when he blew the headgasket and the head was already off. I'm not sure how much it costs, but the car is very fast now so I'd say it's worth doing.
 
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