Hey guys, new to the Audi scene so don't know much about the engines and what fits in what, I've got myself and Audi A4 1.6 1999 with 160k miles which to me is a lot for a little engine, correct me if I'm wrong as I don't know anything about these engines, what type of engines got straight into these? Looking at the Audi TT 1.8t ? Anyone know how much work is involved, engine no. Etc.

Cheers!