Purchased an audi TT 225 K04 turbo for my 2004 Audi A4 1.8T 6 speed quatro. Wondering what exhaust manifold and other goods i need to install this turbo.

have audi TT diverter valve and 225 injectors, and 225 MAF, but having problem with tuning what we suspect the current turbo we have is a K03/K04 turbo although we were told it was an exact bolt in K04 audi TT225 swap. We now want to swap the OE K04 audi TT 225 turbo in to make sure it runs correct.

any links or advice would be great!
thanks!
Mark