yes its the same part
Did you change both coils?
The ignition cables can also cause this.
I check spark at end of HT leads it seems to be good as i can see good spark on that an another thing is its very diffcult to find a spare of punto models here in Dubai can i use any other cross reference HT leads. It would be ok if its for toyota,Nissan
More likely to cause detonation/pre-ignition (much more damaging!)
But (I repeat):
Much more likely to be leads than plugs
Another make of plug will be fine
Get the codes read
DCPR8E is a very hard plug, but NGK/FIAT will be recommending it for a reason.
You can get them on eBay UK.............