Thanks for your suggestions everyone, really appreciate the solidarity and mutual support of the members on this forum.
Unfortunately I'm located in Thailand (head was shipped from Arizona) so I can't use any of your contacts :-(, however there is some shops locally that perform TIG welding I just have to find the right one :-).
Just another question would you recommend disassembling the head before the welding process(remove cam, rockers, valves etc..)? does the heat might damage these components?
Thanks