How do you change a brakelight on a Fiat Punto?
Under the carpet in the boot of the car there is a tool kit sitting on top of the spare wheel. There is a small cylindrical plastic piece with a female hex fitting in it. On the rear pillar above where the seat belt comes out there is a circular plastic piece that you pop off. Carefully put the hex end of the tool into the hole and inscrew the nut inside. There is another nut about level with the boot sill inside the boot. Remove the cluster and unclip the wiring, remove the back of the cluster with the screwdriver. Change the bulb and reassemble. Easy enough but the nuts can be fiddly.
The Fiat Punto Sporting is a vehicle that is no longer made, so to purchase one it would have to be a used vehicle. In order to find this type of vehicle, one might check a local Fiat dealership, or perhaps Autotrader. The Fiat Punto Sporting may also possibly be found on Ebay depending on the availability in the listings at the time you are looking to purchase.