Newbie wants to buy an Audi 80 B4 2.3E, and has a couple ask!

Hello people, and I would like to buy an Audi 80 B4 2.3E (NG engine with 133hp) first registration 05/1992. The running power of the car is 338.xxx Km, color is red. TÜV has it only until this month so 12/2010. I wanted to know what I have to pay attention to with this mileage what is very vulnerable, what should I consider Is the high running power of the 2.3E safe or is it already critical here? What I noticed is the car running in the standing wallfre i without murmuring and murmuring, however at full throttle in the stand you feel a ”jumping” at the gas, what can this be nice? So here are the main points: engine and gear ? Does the whole cram hold out even more or should I rather leave the fingers off ? Carousel ? Is rust safe here or should I look for any nests ? How does this look to share with carrying ? Delicate in the 80s or rather harmless ? What should I pay attention to when buying ? W were very grateful for a few infos.