Quite a nice car by the looks of it.
I've had a few Alfa's with the 2.4 JTD engine, not sure if that one has the 20V engine? In the 156 the 20V was still nice, in the later Brera it got to around 200bhp but MPG was dire, low 30's... I always found the 10V engine simpler as less keen to throw up fault codes and go into limp mode..
For those wanting it companies like shipley are still operating, reckon on under £1 per mile if you leave it a few days to get quotes,
Getting it UK registered is just paperwork, no duty to pay as over 10 years old.
Manual as well, would make a great car
https://www.shiply.com/?source=bing-ppc-brand&msclkid=979e594f29ed18c614800689e7db5e27