Ive got a top end with pistons that may have 300kms on it, $200 + shipping its all yours.
You should be able to re use the base gasket, exhaust gasket and head o rings should be replaced tho. Ive also used old exhaust gaskets and just used high temp RTV and its worked when I had nothing laying around.
I may also have many of the gaskets, Ill have to have a look and ill throw in everything I can.