2002 astra auto estate £450

Advertising on behalf of a friend.
Its a 2002 astra 1.6 8v estate in silver, 65k 6months mot 2months tax.
This car looks mint bodywork is excelent and interior is like new.
The problem is there was oil in the water and slight bit of oil on plugs, so was a suspected head gasket failure. This was changed along with the cam belt and pulleys, thermostat, waterpump, skimmed head fitted with new bolts. The problem still pursists so now it looks like either worn valve guides or more than likley a cracked head so budget £200ish for a head.
Looking for £450 as that's what it owes him in parts. Anyone who is interested pm me and I can give you a number to talk to him on;)
Cheers peeps