Engine, Drivetrain
I thought I would point out something that may not have been obvious. I've been selling the FAST XFI kits for the 5.7/6.1 HEMIs since inception for about $3K, but if you are really looking for a lower cost alternative you can use the EZ-EFI retro kit.
All you do is use the 302000 EZ kit ($825)...