Welcome to AF!
Sorry to say it, but honestly, I don't think it's worth it. The car is just a re-badged Daewoo, not known for anything good. Those engines are just about the worst. Low HP, poor reliability/durability, they don't even get very good gas mileage compared to other engines of similar size. I think they're also just about maxed out in stock form, I'd be surprised if you could bore them more than .020" over, and good luck finding oversized rings. With such a small bore to begin with, that would gain
very few CCs anyway. The larger the original bore, the more you gain. I would be willing to bet (but don't know for a fact) you couldn't find the parts you'd need to get it to 200 HP. If you want a nice little economy "sleeper", get yourself something with the 2.2 or 2.4 Ecotec and boost it. My Cavalier (in sig) currently has 230HP (will be 250 in a couple weeks
) and is truly fun to drive. The 2.2 engine can safely handle 250 HP in stock form (not sure about the 2.4), so unless you want to abandon the "economy" part completely, you wouldn't have to upgrade the engine at all and it would still take just about anything on the road. With a few thousand in engine upgrades you can get them to 400HP and still have it fairly streetable, from what I hear.