some questions about a 99 gt

thanks now i was wondering how much boost i could safely run with a twin turbo, or superchager. and which one do you guys prefer. this car is my daily driver but have a common problem with the need for speed and by the way the motor is completly stock but the rear was built by my local shop with 4.10 gears and full detriot locker
 
thanks im looking to go fast and but need it to get back and forth to work

centifigals are only in boost when floored at 3500 rpm's. However I did the recommended fuel injector, fuel pump upgrade, tune, etc and I'm getting 10mpg and using 93oct. Also the blower&installation is quite expensive unless you have a friend that can help you. Good luck with your GT. Enjoy. Stay safe.
 
There is another thread going on right now in talk, about how much HP the stock 2v bottom end can handle and the 400 mark isn't really correct as long as the tune on the car is spot on. Hotmustang331 had a gt that was making (i think he said) over 500 hp with his turbo setup. A centri blower will also be less stressful on the motor
 
You're safe with around 400RWHP. Tuning and fuel is the most important thing to a long living supercharged motor. As long as it is detonation free, it will live forever. I would add a nice Vortec S-trim with about 8-10lbs. If you want more HP, like 450-500RWHP, add methanol injection, 14lbs of boost and premium fuel.