Euro2 and timing belt change at ABH V8

Hello

I tried to search, but I didn't find any definite answers.
On the subject: I have an Audi 100 S4 6-speed EZ12/93 to buy soda. But it should still be converted to Euro2 and the timing belt is due soon.Can you change the car to Euro2? Costs? ==References== at this motor of the timing belt change ?

Thank you very much

Greetings to Dominik