give Andrew Bruce a call at far North aviation in Wick
Yep, that's sound advice, if you are going to risk life and limb.
Any search engine will find his site for you in a moment.
(I have no involvement with Andrew other than a respect for his considerable expertise and the way he does business).
Finally, for what it's worth, I think that ferrying piston engined aeroplanes (OK, not DC-things!) across the pond is foolhardy in the extreme. Take it apart and crate it, is my advice.