Need help figuring engine type

Alright I have an 02 a4 with the 1.8t. I'm trying to get parts for my engine, i.e. timing belt kit, oil pump and possibly new head. I have done a lot of research but with limited info. I know that 02's are suppose to come with AMB engine but mine is an AEB, according to the stamp on the cylinder head. I know that the heads are interchangeable. So my question is, how do I find out what I have? I want to make sure before i buy the parts.

Thanks