StrokeMotion,
Please be very carefull, is your KK on Italian plates? if so you might not be able to fit a Backbone for the winch and also fit a lift without getting into trouble with the local police. Winches & bigger tyres & suspention lift over a certain hight need to be amended on the Log Book of the KK. Jeep Italy will not issue conformance for the Motrizzazione to pass you KK to be road legal in Italy. Best thing you can do is to get in contact with some local 4x4 Club or KJ Italia and they will help you get around all these little annoying issues.
A better solution if you still wish to fit a winch is the have a looks like this photo:
as this is hidden within the body of the KK and will allow you to get away with the Italian Police ( Detour backbones over hangs the bumper, so not allowed in Italy without some serious paperwork !!!!! and it might still not be passed).
Tyres only what is on the Log book or what Jeep Italy have allowed and registered ( you might be very limited there going 245/75R16 is already out, but 245/70R16 still okay)
Lifts: Don't go higher than 2 inc and you might get away as it doesn't stand out, anything taller you will need to go to Motorizzazione and pass test and a lot of paperwork.
Now if you are on US or EE or international plates you can do what you want (as long as it complies with the Country of origine) until you have to register the KK in Italy if you are a resident.....
Fil.