Components you'll need:
Turbo manifold, intercooler kit (piping, intercooler, silicone hoses, clamps), turbocharger, oil cooler, oil cooler lines, turbocharger coolant lines (assuming the turbocharger has coolant lines as well), blow off valve, vacuum tubing, wideband o2 sensor, wideband o2 sensor gauge, tuning device (either a piggy-back system or full stand alone engine management system; A'Pexi SAFC Neo, AEM EMS, MegaSquirt), turbo manifold to head gasket, turbo to turbo manifold gasket, wastegate housing and gasket, boost/vacuum gauge.
One thing to keep in mind when building a vehicle that wasn't meant to have a turbocharger on it is the fuel management, compression ratio of the pistons, and boost pressure.
If you would like to increase the boost above stock levels (7-10 is acceptable on the 420A non-turbo engine) you'll have to swap out the pistons for something that's lower in compression. A good compression ratio is 8.8:1. Also, swap out the head gasket for one made by Cometic as they are highly reliable. You'll also have to swap the head studs. I would recommend head studs made by ARP since they are less likely to stretch under load and can hold more pressure in comparison to the stock head studs.
Those are some of the basics to changing a naturally aspirated engine to a turbocharged engine. For more information on the subject, check out the links below.