Hi,
I've purchased parts from this guy www.jaeckel-partner.de in Hamburg. I found him helpful and knowledgeable.
This is a longer trip for you. This guy http://www.threepointfour.co.uk/index.htm does servicing and restoration, he also writes the club magazine for the UK De Tomaso Club.
There are also several US engine specialists in the UK.
Hope this helps.
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