erm... I assume its not a 1.8t already?
If its just a non turbo 1.8 20v then unless the car holds sentimental value or you are turning it into a track car with 3 million bhp then I would really not bother...
A3 1.8t's are plentiful and already sorted out of the factory... suspension and brakes will all be different not to mention the wiring, ECU, recoding of things etc that needs to be done...
The cost of insurance will be higher than just insuring a 1.8t because of the engine swap.... you would be better off finding a decent 1.8t and use that as a base as the cost and effort really isn't worth it
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