If you're looking to modify the engine at all, Mass Air is the only way to go. True...you can modify a speed density motor, but the state of tune becomes much more important. Like Chevyguy said...a speed density system might make a few more horsepower stock, but the adjustability of Mass Air is it's selling point.
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1984 1/2 GT350 (#842 Hatchback w/ T-tops)
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