After a little searching, it looks like there are only 5 N/A 5.3L trucks in the 12's. Magic Chicken and Snake Eater are doing it with EC's, 12sec.5.3 is the other RC.

What do you think it would take for my CC?

 

Alternate route:

F119
2-3 Ratchet straps
No transmission required

 

Cam
Heads stock pocket ported & polish
fully-bolt-ons on motor
modded tranny w/3400 stall
4.10 or 4.56
slicks
traction bars
and a good tune