Guy wants me to install a 2006 5.7 out of a truck into a 70 challenger. Never did this swap, reading a lot about it. Has anyone done it? What is the best kit to purchase? Looks like he wants to reprogram the OEM ECM. Who makes the best conversion kits for the money? I have read about the oil sump, oil filter relocation, electronic pedal assembly, exhaust. And you have to use a smallblock 727, with a special flex plate for the conversion to a 3 speed tranny?