2000 Tiburon Mods/Engine Swap Advice

Hey guys I need some help with my Tiburon. I need to know if I should engine swap it for a bigger 2.7 Liter (It has a 2.0 Liter Stock) engine or should I just replace the internal engine parts so it can handle a lot of added horse power.

And Also if I don't engine swap it what are some really good upgrades. Details and Links if possible. Thanks

Side Note: I have access to a to a whole race garage with almost every tool needed.