misinformation abound.
do you know how to weld?
take your budget for turbocharging the engine, and write that down.
now double that. now take 1/3rd of that price, and add that to the total. thats your true budget as you will far surpass your total.
you can turbo the NA FC. however i would NOT do it to adams old tired engine that you purchased off him.
that is rule number one. always start with a fresh engine when you go turbo.
rule number two, dont skimp or cut corners. you need a proper ecu. i reccomend a Sprint RE from haltech. this thing is very cheap, and does everything you need it to do.
2nd step. fuel. get some bigger injectors. start off with 550cc and work your way up in the combination. i currently run 550cc primaries and 1600cc seccondaries. then upgrade the fuel pump and fuel pressure regulator.
you are pretty much done at this point.