If your not looking for a whole hell of a lot,then your best bet would be to find a n/a 2.0 motor,tranny,harness etc and put that in there.then you would have more ready available options such as headers,valve springs, so on.Its too bad for the 1.8 as it is a very bullet proof motor,if we were only in australia.
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"Sit right here pimpin,let daddy holla at ya,Now daddy can do this ALL DAY, EVERYDAY,NO PROBLEM". MAKE A PIMP DECISION