2016 GMC Denali 6.2L Whipple Supercharged with a built motor

Reason I'm selling is I purchased a new TRX and just have no need for this truck, the Whipple Bering sized up about a year ago and after sending Whipple the blower they said repair costs were $4,200 so I decided to put a whole supercharger on for $5,300, that just made more sense with its tune secondary fuel pump etc. While it was sitting I had all the dings and dents taken care of, a new Back Flip hard bed cover put on and brand new Wilwood Rotors pads and re-built 6 piston calipers installed. So the new supercharger has about 200 miles on it, the built motor has 12,000 miles on it.  

LMT (Late Model Throttle) did all the work the whole time I had it except for Building the motor they sent it out to a machine shop to handle that. Here are the specs 

-Brand new GM transmission at 51,000 miles (have the paperwork on it)
- Heavy duty torque converter (Circle D, also have paperwork)
-Forged Gen V 6.2 block
-Forged Wiseco Pistons
-Forged K1 technologies 6.125 LS H Beam rods with ARP bolts
-ARP main studs
-OEM coated bearings
-Manley stainless steel valves 
-NGK spark plugs
-MSD wires
-Brian Tooley rocker kit
-Cylinder heads ported and polished

They estimate the engine HP to be right around 800 and TQ 650
The rear wheel HP was 561.18 and TQ was 555

This truck was my baby for a few years and I really tried to get it the the best shape before it goes off to the next car guy/girl. I also have many of invoices on the builds and maintenance.