Now switch to the 10mm deep socket to get the primary throttle body mount bolts. These hold the secondary throttle body mount bracket in place. Although it appears the new boot will fit with this bracket in place, it serves no purpose any longer:
Remove all four bolts and set aside for re-use.
Then the bracket falls off:
Replace the four mounting bolts. Although you could use 5mm shorter bolts, the original ones are fine. They do not bottom out. Be sure to tighten them corner-to-corner and a little at a time. You are tightening into PLASTIC don't forget!
Once those are snugged up (don't go crazy on them!) you need to deal with a small problem: plugging an extra hole in the new boot.
I used a 5/8 inch dowel (actually a drum stick) to plug the extra hole. I pressed it in (it fits better in the hole you need to plug; the other hole is larger) and then marked it for cutting. Once installed, I tightened a hose clamp on it to ensure no leaks. Any leaks will give you a poor idle...
(continued)