Check your mail; I'm sending the plans to you now. You can open them with a paint program and view and print them from there. You can also rescale them if you wish, but that will make them lose clarity. The files will be smaller though, so you'll save a little disk space.Anyway, grab a copy of "Paint Shop Pro" from JASC Software and give that a go.
About using them in a car, it's nice to be able to just put them in the back deck, if you have the room. You can set them in the rear of a van, as long as the tweeters are exposed. I've also bolted them to the rear firewall of a car that I had about 20 years ago. Just pull the woofers out, drill through the back panel, bolt it to the car, and re-install the woofers. That's really something more for the young at heart, that would remove their back seats to install a car stereo. Sort of like Thylantyr's "Hell Van."