If they are currently fitted to a Bora then yes they will fit an
Ibiza 5 stud. However you'll need different tyres.
I'm guessing you're talking about those flat faced ones with slotty spokes? They're replicas and loads of them on ebay. Watch out for corrosion on the polished faces if so as it's going to cost you a couple of hundred at least to get them refurbished.