weld the diff weld the diff weld the diff , it is the most fun you can ever have in a 1.6 sierra, my mate had a 1.8 saff with a welded diff, used to donut around the gearstick in the dry , also, if you get some boost guage hose and connet it to your windscreen washers, run it under the car to the rear wheel arches, you can have fairy liquid and water dispensed onto your tyres on command