yo I heard these things come turbo!
If you want turbo, You really must only buy a turbo model. Or atleast do a full engine swap with wiring etc.
Ive bought enough individual parts for these cars at "a good price" and there is no way that trying to turbo an N/A would be cheaper. You need to incorporate parts that would probably equate to more than swapping in a turbo motor w/ all the required parts included. That statement may be a tad invisible. Considering you want better connecting rods, pistons, lower compression, map sensor, wiring harness, computer, gaskets, etc.
add it all up and it all boils down to buying a turbo model, or doing a complete swap