I think the "newest" Audi I'd buy would be the RS2.
I couldn't even find a part for my VW 2006 mk1 Golf late last year. That was 1 month after VW decided to stop producing them.
If I could get some good rubber seals/moulds for the V8 I'm going to have them produced by the local rubber supply shop. Might actually go have a word with them since they do make custom one-off casts for classic cars. Probably 1/10th of dealer price too.