I bought a wrecked TT as a doner car I paid $2500 for the TT and have sold over $3000 worth of parts I did not need.I can not see doing it with out a doner car on hand, to do it correct there are a lot of parts that need to be changed.I have spent about $5000 on the conversion, that doing a complete rebuild turbos, injectors,intercoolers,and a lot more.....