Sub'd. Awesome that you're doing this, I think the 3rd gen is a great platform for KOH having recently acquired one. What, if any, crawlbox are you thinking of using?
After doing this swap myself I would hightly recommend to anybody to just go ahead and buy the hand brake and bracket that comes with the center console. Makes it a slam dunk swap with no issues. I paid 15 bucks for the brake and bracket. 50 bucks for the console.
Found the problem. Sure enough I looked under the dash (passenger side, laying on my back looking up) there was a threaded rod that is unhooked from a little white plastic lever on the bottom of what I guess what would be called the plenum? It's missing whatever the gadget is that holds the rod...