I have done 1

It was a while ago but I don't remember any special tools,I would recommend getting someone to lift the head off/on with you and the injectors need re adjusting once the head is back on,I think you wind them down till the stop and then back off 1 1/2 turns but not 100% sure.
Other than that the fuel pipes are a bit tight to get to,if u have time on your side a workshop manual through eBay should be very cheap called RAVE.
Overall not a bad job