You can create parts lists for digi-key that are pretty much one-click to fill your cart if I understand properly. I've been eyeing the Megasquirt kit for a while now to mess around with but haven't had a vehicle I really wanted to mess with in a couple years.

http://www.megasquirt.info/
http://www.megasquirt.info/v3bom.htm

http://www.digikey.com/

This way you could source whatever parts you think are appropriate and anybody here can easily order them.