A big one, since I basically had no idea what parts were interchangeable, I went with the flow but it was a costly one.

Turned out none of the 1.6's accessories fit the 2.0, including the flywheel, so I had to buy every accesory with the brackets and a flywheel, the only parts that were interchangeable were the clutch system and the transmission. Some parts I got at the scrapyard, but 1/2 of it I had to buy brand new at the dealer and you know how expensive that can be.

Was it worth it?

More like if I had been better prepared and informed it would have cost me way less, but for what it did cost me its not worth it. Im not displeased with the 2.0, in fact it made the car alot more fun to drive with the extra power.

At least I can brag about having the only 2.0 Aveo, and with the addition of the turbo, I am happier then ever, the 2.0 is a little better to work with for forced induction and it takes boost very well. You can push over 12 psi in this baby with the right tuning on stock internals. Im not planning to go that high but it makes you see the potencial!

If you want to see a nicely boosted 2.0 motor, there is a guy on Daewootech named exist3nce, he lives only 6 hours from me. The dyno video speaks for itself: http://www.youtube.com/watch?v=n8CO4r68W94