Well it looks like my cometic head gasket has gone without even being used even though I had the block n head skimmed. Lesson learned and I'll use one of these group A gaskets to repair. I've a small turbo escort thats only going to be 300bhp max (prob more like 280). Is the YB 0611 the right one for me too? What head bolts should I use? I dont want to be doing this again in a hurry.