I think with any major conversion purchase like this, for under £10k its a case of accepting that there will be work to be done, and that some of the 'finds' will be eye openers. However the basic engineering is done, it run/ran as a 20vT successfully and that's a quantum leap forward from a blank canvas 80 with a naturally aspirated 4 pot. I personally (and probably like you) absolutely love the concept of a big power Audi 80 quattro, and I'm delighted it's working its way back to full, rude health with you... Well done...