Ive been trying to research putting a turbo on an h22a. So far the things ive come up with are , its strongly suggested to re-sleeve and to get aftermarket pistons and rods.

Would this be the only engine work I should do before?

I know im not nearly as car smart as you guys and that is why im asking you. Id like to do things right the first time and not eff everything up.

Oh and what exactly is the reason you have to re sleeve?
Thanks