Not sure what you mean by the bolt heads on the right of the pic? If it helps any the bolts i'm using the now came with the marea alloys and are about 10-20mm longer than the standard steel wheel ones from what i remember.
As for the spacers i'm sure i say it in a previous post in which it said they would be required due to the offset difference between the stilo and brava.
Cheers for telling me that it'll need to be 205 tyres and not 195's just need to find ones at a good price, what tyres are you using the now? I've used pirelli p6000's from day one on my steel wheels and marea alloys, they've been great for me but a bit pricey and since i'm sued to them dont want to go for a tyre that isn't as good just for the looks.
Ghengis Khan, www.babarmalik.com