I've got a buddy with a f-150 5.0, auto, single cab long bed, that he is thinking of turbocharging.

Twin turbo actually. Is this a wise idea? What does he need to do, buy or change?

I know on my old Eagle Talon (a american Eclipse), you have to get new pistons to turbo charge it, because they can hold up to it.

Also, would he have to change to 93 octane?