UPDATE
I installed everything last night.
Tips for those doing future searching:
Raise the car. I put it up and was much easier to access the 4 (on my 02) 12mm bolts on the underside. Two up front below the area of the rad and two between the wheels near the midline.
When reinstalling the tray, I attached the front two bolts first then used the stock jack to raise the rear of the tray.
When reinstalling, dont tighten the front two bolts too much. Leave them loose until you get the rear bolts in as it will be much easier to line the rear holes up. Im reluctant to get under the car, so couldnt visually confirm the holes lined up from my point of view. Leaving everything loose, I was able to thread the bolts by hand to get them in, and then tighten.
Dont forget the teflon (plastic) washers that go between the tray and the bolt hole in the front!
I purchased the
925 billet mount from Summit Racing. While I received excellent service from Summit, I would be cautious with this mount as positioning is of critical importance. There is a lip around the battery which, if you are not careful, will position the Odyssey 925 battery too far from the terminal cables. Do a test fit considering cable length!