[Honkeytonk Monkey]

Mike, you can access the lower bolt from under the car, and access the higher bolt by turning the wheel to lock, or removing the tire altogether. It's best to do the links while the car is sitting on it's tires though, so ramps or a full lift. I did mine in Canadian Tire's shop at work. To install the new links, if you get the better ones from CT, you're going to need a slim 18MM wrench to hold the the link while you tighten the bolt that holds it in place. If you don't you'll end up twisting and wrecking the boot on the ends. Park tools sells bicycle wrenches that work quite well and are fairly surdy. They are 2.5mm thick which is what you need for the job.