Yes you can turbo your n/a engine. Buy the turbo manifold, turbo, oil line and t fitting, exhaust downpipe. Megasquirt, adjustable fuel pressure regulator, later on you will need to upgrade to a better fuel pump, J-pipe, turbo dist, its easier to do with a turbo dist, turbo oil pan, or add the drain bung to your oil pan, other parts are listed in the forums. Have add it.
I have been running an N/A Turbo engine for 6 years and love it.