remember as well as the punto75, the late (post may 1997)punto60 has the same cam. engine code 176.B4 - but double check it seems not all of them have them.
scrap yard ?
I think i have a brand new never been run cam in my garage at the minute, its being removed to make way for a 280 c&b i can have a look thursday evening. I will post my findings. So offers via pm please.