I like FAST EFI products, but in my particular application mainly no fuel return line, The retrotek/professional products Powerjection III is the simplist EFI out there in my opinion and my application. Also, very easy install with little to no wiring harnesses, and self tuning. The returnless fuell system up to 500hp is now available. I am ording this next month for my 390, I have been emailing them for the past 4 months on this... Also the price for the full system plus fuel system is about $1890.00
http://www.retrotekspeed.com/products/powerjection-iii
This is a really neat video
http://www.streetlegaltv.com/forum/one- ... -2033.html
Blessings,
AMS