Update on the LCD screen:

I called MP3 car and told them what happened. I asked if they would consider hooking me up with some free overnight shipping out of the kindness of their hearts. I got on my knees and begged for pity.

The guy I talked to, Matthew, was actually really cool. He went and did some research on the screen I was using and called me back. He found one they had with a dead pixel. He said I could use the PCB board (the part I fried), and use my old LCD screen to get around the dead pixel. The best part: he's sending me the new LCD screen for free. I sprung for overnight shipping (with Saturday delivery) - so it looks like the carputer might be complete this weekend after all!

Mega shoutouts to MP3car.com - if you're considering doing a car computer install, I highly recommend them as they've really impressed me with their customer service. They also had nearly everything I needed in once place (Besides the mac and some cables). I got the rest of the stuff at Sewell Direct.