In the rad/engine cover?
These thing quite often end up a labour of love, and due to having a proper day job I can do them at a good price compered to the one offered from a company in the USA and they did not fill in the hole (why when they say they developed a mould)
So the cost or price would end up around the £125 to £150 which if you work it back I make about £40 for my trouble.