The company and individual you're looking for are in Sealy, Texas. The company is DD Performance Research. This is their website: http://www.ddperformanceresearch.com/learn-stuff.php
You're much better off calling them or checking their Facebook page.
As far as I know, they've not made an intake manifold in many years. But they may be able to tell you where to find one.
The throttle body they'd recommend comes from another vehicle. They'll have that info and it depends on whether your throttle body is drive by wire or not.
P.S. Oh! Ask for Dave!