I have a 2005 5.7 long block that has sensors but no harness, no computer, no fuel injection and it hooks to a SB 727. If I get a 4150 style short intake and run a EFI (like a Fitech)and an ignition control (like an MSD unit), I will have everything my engine needs to run? I won't need a $1000 wiring harness and a modified computer? The EFI and MSD will do it all, or am I having a dream and missed a bunch of info?