Thanks Ken! That's very helpful. And I really like the idea of being able to remove the extension for easier side access.
ViperRay, all the 04 shop manual shows as lift points are the four points where the arms on the hydraulic lift in the shop would be positioned to lift up the entire car. I would guess (and I am guessing!) that you could use one of these four points as a jack point so long as your floor jack has a small contact dish (like on a bottle jack, even though a bottle jack clearly won't fit under the car) and not a large contact dish like mine, given that these four points are pretty small and surrounded by and flush with under belly panels that cannot support any weight. You can find two of these four points just behind the front wheels and just inside of the rocker panels. They look like a bent piece of metal (V-shaped) that's maybe an inch and half wide. You would position the small contact dish on the point of this V-shaped piece of metal. Of course you'll have to drive up on some ramps to visually id these lift points the first time. Again, I have not tried this myself. It just sounds reasonable to me.