im assuming you want efi? you need: kmember...summit sells new fms stand alone wiring harness for around 200.00+...computer...mechanical gauges...msd electronics...a return style fuel system. that would get your motor up and running...all the stuff like the ac and other accessories would be the headache...its not much different then a 4cyl swap...

going carb would eliminate some parts
and be a little simpler...

i was going to do a push rod engine in the fakesnake (2000 v-6) but decided to go modular...and i had everything to do a procharged 347ci...