Although after some research, it looks like the Holley shop truck 67 C10 which is running a LS3/tKo600 is also running a 4.11 rear. I can see how you're indecisive.
Holley truck specs and video
http://forums.holley.com/showthread....C10-Shop-Truck
https://m.youtube.com/watch?feature=...&v=av_Sm1sZwZA