80s Cabrio 2.3E or 2.6E ?

Hello people I have to buy an 80s cab before next year. Price range 12,000 euros and max.120.000km To prevent any mistakes on my part when buying I would like to ask you to give me a few tips or info ́s So the following: 1. Was there a glass pane (e.g. as an extra) in the 80s Cab or just the plastic? 2. I don’t know yet which motorization, preferably the 2.3E 5th would be a typical good sound and keeps itself in limits when consuming. until the end of 94 was built so it will be hard to find one with 100,000km and even if at an age of 14 years the result is 7200km per year I am afraid that it has been broken and I have to invest a lot of money every month because another part is always broken. That’s why I don’t have to take the 2.6E? I think it was built up to 99. What do you say about it? MFG S1 Pikes Peak and sorry for the huge amount of text