Step 1: Remove complete engine/ecu harness from teg. (interior & exterior)
Step 2: Remove harness from DX
Step 3: Install teg harness in DX.
Step 4: Pat your noob ass on the back. Have a beer.
Or, you can go the ghetto route and run various wires all over the damn place, hack and slash the harness, and make the whole thing sloppy. Either way.
Being that you have a complete teg to rob the harness from, I would strongly reccomend going with option 1.
P.S. There was a company on ebay called "Arizona Race" that sold good shift linkages for like $100 or less. I put em in my car and never had any trouble. Yes, you can do it yourself but for time and simplicity, I would reccomend the linkage.
Mounts: The best/most expensive route is hasport. Damn nice mounts, but very expensive. I used some ebay mounts from a japanese company. I forget the name now, but do your research before you buy cheap mounts.. Some align the motor poorly and cause bad issues.