I've decided against the Elbow and Nick Williams 92mm TB setup. Instead I decided to try a 4500 style TB setup. I was set with going with a brand new Accufab, but came across a killer deal on this setup, from a guy on LS1tech, who went bigger. Should be here and on soon!
Here's a better picture of the 1,600 CFM Throttle Body.
I'm having some issues getting my TH400 UCC Converter to seat on the pump of my transmission, but it seems to seat fine on Trigger's TH400..and his Yank seems to seat on my trans fine..so I think I'm going to have to end up using this converter.