spintech mufflers are very good as far a power goes, but they are pretty loud. louder than a 2 chamber flowmaster. they kinda have a poping sound at high RPM's, sounds linda like an lt1 when you hev it hard. at idle they sound awsome, expecialy if you have a cam.
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89' coupe
12.5 sec. 1/4 mile
cold air, off-road h-pipe, tremic 3550, cobra RR's, 3.73, aluminum drive shaft, mac headers, sub frame con., 125 wet-shot, Mark VIII fan (best investment so far).
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