Building an engine isn't something you can just dig your hands and start going. There is a lot of math involved into calculating what you want it to do for you. You will need to get certain tools that will run your bill up high, then trying to bore anything, it requires experience.
First off, you need to know what you want it to do. Then you will need to measure out CC's, bore, stroke, compression ratio, valve clearance, gasket thickness, proper valve buckets (lifters), valve spring dampening (measuring spring rate), valve diameter...etc...you get the idea now? That's just the engine itself without ECM calibration, yet alone going forced induction. There is a lot more, like intake runner length, intake plenum size, throttle body size...its engineering.
2009 Cobalt LS XFE U74
Mods: K&N Typhoon Intake, Option Cat-Back Exhaust, Cosmo Short shifter, Maxxim Ahead 17X7's, MPx shorty antenna, FE5 Strut/shocks, Tein S Techs, Moog endlinks, Moog spring seaters, ZZP shorty header, LSJ downpipe, LNF front grille