Does any one know hoe much shipping would be for a set of twin cam heads to usa and back or should i buy off flea bay in us and send them to head porter any ideas would be great thanks.

+1 - But sending to USA with Aus Post seems to cost an arm and a leg for some reason.

Tell me about it !
About $180 from US to AU for a pair of Cyl' heads, but probably costs about double from AU to US !!
Easier to buy them over there.

Each head weighs about 5 kg.

About $400 to send a pair of heads from perth to new york via fedex.
Walked out went online & bought me a set in US, delivered to new york for $150 US when the AU was $1.07