Most of them you don't need. Just replace what you take off and bag the rest. Get a good 16mm impact socket for taking off the head bolts. Read my posts cause i asked every daft question there is! But got there in the end. And like i say, its easier than i thought. Was amazed that 5 different mechanics all told me they wouldn't even consider doing the job! Good luck, take your time and be methodical- exactly what i was told! Was good advice. You've got rave, i assume?