I have been WAY to busy in the last week sorry fella. My life will be back to normal shortly.
I can get a copper headgasket made up they are reuseable too if you dont twist them when they are removed etc. It will be around £150 if your interested.
As for pistons you need to know what grade you need. The block will be stamped with a series of numbers, get a K10 haynes manual to tell you about this. I can supply them but you must make sure you choose the right grade as they would be a special order and I could not accept a return.