Long Tube headers generate more horsepower and torque, throughout the power range. If your shortys and h-pipe are in good shape you might want to do other mods with the $400. If you're h-pipe needs to be replaced anyway - I would suggest long-tubes. But the install of longtubes is a little tricky and time consuming. We decided to go with long-tubes on our stang - the sound is great with the added hp!
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