Will an abarth exhaust fit onto a 1.2 grande punto and will there be much of a noise difference?

Cant comment on the fit front end. But the tailpipe will hang real low under the bumper as you don't have the extra trim.

Are you on Punto Enthusiasts on facebook? Alex Bonser has just fitted the Abarth backbox to his 1.2 so should be able to help you out. He has a video of it too I'm sure he'd be happy to share.

Jacob can u share the video here?
i'm also interested!