My Punto is infected by rust. All 4 doors, Bonnet, Boot Door and Front Fenders are infected very badly. I've shown this to Mr. Mangesh Kodalkar during free checkup camp and a detailed report is being prepaired for final treatment. One solution may be to replace infected body parts however its early to say like this but this is a possibility. I want to know differences between factory fitted and replacement parts. I know , replacement one is lighter compared to factory fitted, but are there any other differences like no sealent, missing safty rods and extra noice from these parts etc. Your knowledge is very much valuable for me at this time. Also, please check your car completly , specially on hinges because I've seen this kind of rust in other Puntos too.