5.7 HEMI Vs. 408 Stroker

i am seriously considering an efi hemi in my duster. i dont think for one second it is worth it as far as bang for buck. the part the really pisses me off and keeps me from wanting to do it, is the electronics side of it. 1,000$ for a pre made wiring harness to be able to run a o.e.m. computer? how much does it really cost to build that harness. minimum 2,000$ for an aftermarket management system? bunch of crooks out there. to me there is no point of running a carb on one of these engines, way too much money and effort involved to really get no advantage over a carbed small or bigblock. you can build a motor and get it running for less than you can have a junkyard engine and trans sitting in your a body, but not yet running.