[johnnym]

Front shocks- not a problem- they unbolt easily. Rear shocks can be more of a problem, as the lower nuts can be a right pain to get undone. The problem is that access to them is restricted by the sides of the trailing arm, and they thread onto a free- moving rod. What this means is that you must turn the nut with one hand, whilst keeping the rod in position with the other. Alfa helpfully provided a notch in the rod, so that a screwdriver can be used. In my experience this does not provide enough purchase to overcome the invariable corrosion. Aftermarket shocks had a hex head on the bottom- much easier to grip.
Alternatively, cut the nuts off with a hacksaw or nut splitter.