What's it take to make a 95-97 Mustang GT (4.6L) fast?

[Hammer]

Stock, a 96-97 GT will usually pull an even 15.00 sec quarter mile on street tires.... sometimes a little faster....

For mid-high 13 second times, gears, exhaust, pullies, and a small shot (75 pill) of nitrous should do it...

Anything faster, you'll need to go ahead and replace that intake if you're thinking about boost. It WILL go bye-bye...
To get the most out of the engine, you'll really need to ditch the crappy 96-98 heads and go for the 99-00 head swap, or go for the motorsport pieces. Once you're there, the car will absolutely LOVE the boost of a supercharger...

Hope this helps...

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"The Yellowjacket"
381.8 rwhp 377.6 rwtq

"Never underestimate the power of stupid people in large groups."