is it driver or passenger side?
all I am thinking is that if you do this it could have implications for airbags, i.e if it believes someone is in the passenger seat it would blow those airbags passenger side as well, in even of accident.
I have heard of it done on other vehicles although not exactly sure of the method for Alfas.
also have in mind that certainly the passenger side has pressure sensors in the seat so it knows when something is in it. I dont know if it is the same for the drivers side or if that is sort of implied.
1999 156 1.8TS Sport Pack 3
2001 166 3.0 V6 24V Super
2003 156 GTA 3.2 V6 24V
2005 156 1.9 JTDM-Jet Sport
2008 159 1.9 JTDM Lusso
1997 GTV 2.0TS Lusso
2001 147 1.6TS Lusso