Re: Banging in my Alfa
The 156 suffers from lots of suspension issues - it could be wishbone bushes, the front ARB and more. However, the 156 has a very "crashy" ride - when you go over a large hole or a drain cover that's well below the surface of the road, you get a big crash from the suspension that can sound quite alarming. I had this in my 156 2.0 TS and have it in my GTA. I think fitting better dampers on the suspension would cure it, as would avoiding larger holes in the road.
Best bet would be to get to an Alfa specialist that knows the 156. They will be able to help - if this was a local garage they won't have the knowledge. I'd also suggest you post this in the 156 tech lounge.