I was looking at bare bones LCD panels, and I can find them for around $20 or so for an 800x600 panel. However, finding pinout information was impossible even from the manufacturer. Plus, an LCD controller was around $100 anyway.

I stumbled upon this on eBay:

http://cgi.ebay.com/8-4-inch-Car-TFT-LCD-TV-Monitor-AV-Player-with-VGA-Port_W0QQitemZ110462129838QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item19b80e56ae#ht_4839wt_939

It's 8.4", which is the size I want for a compact Mac. It already has the controller and VGA port, obviously. All I'd have to do is run a VGA cable from the mobo to the display.

This seems too easy. Am I missing something?