12 sec is nothing with a LS1 based engine.. Your stock 6.0 with bolt ons, converter, gears and spray will get you there easily.

your planning on getting a built tranny right?.....There goes a chunk of the 12k haha

Mine wasnt built.. 3200 vig, Servo and shift kit thats it.

Good luck finding a Kenne Bell twin screw for these trucks, AFAIK that kit was discontinued, unless you find a used one. If you want a 12 second 1/4, here is what you need...

CAI
Cat-back
LT Headers
Shift kit
Servos
160* T-stat
Plugs/Wires
TruCool Max trans cooler
Custom Tuning

and.....

MP112/122H Magnacharger w/3.0 pulley
2600-2800 stall TC

or.....

125-150 shot N20
3000-3200 stall TC

Either one of those combos whould get you well into the 12's.....keep in mind that you will need to address the brakes too, since the stock brakes are not even sufficient for an AWD SS in stock form.....

http://smiliesftw.com/x/ownedthumb.gif

Brakes..you have a ton of track left to slow down after your run so you dont need brakes....LOL

Dans combos is what most use to get into the 12's.

Add a set of efans to the list above. There is a guy in WI with a cam (dont no specs) stall, elec water pump, head work and tune maybe alittle more not sure but he is in the 12's

I went with a 6.2L Aluminam block, Cam, ARP Bolt and 200 shot 11.724 @ 117.09. Got about 7 K in it. The weight is the big killer in these. The same setup in a car. Wow, I'll bet mid 10'S. My truck weighs 6000 LBS. with me.

4 folwmasters should do it with crome gas cap door....

a $12,000 chrome gas cap door would be sick :headbang:

Spend $500 on a nitrous kit and spray the shit out of it. Do a wet 150 shot and a stall. That should get you pretty close to where you wanna be.