Sinistersilverado

I finally got a 6.0. Came out of a 2005 silverado 2500 with only 65,xxx miles. Not sure if this is the lq9 or lq4. I've had ideas about set ups from reading around on here, but now that its come down to it i cant decide. All i know is i want this to be done n/a. So heres my question. How hard will it be to make this engine push pass 400+ while being able to drive it around on the street to cruise? The set ups i have found are barely hitting 360's or 370's.