I'm in the process of ordering a MegaSquirt system for my 6. The sites are
www.bgsoflex.com/megasquirt.html (offical) members.shaw.ca/megasquirt/MS%20FAQ.htm (unofficial). They both have some good info. This won't be the way to do it for most people but it's something to consider. I'll be getting fuel injectors and such off of ebay. I've been bidding.