Gentlemen,
Be sure to check the rules. It can be very expensive.
My latest shipment of GM90 Listeroids got stopped at the port in Canada and was deemed to be lacking adequate fumigation.
By import law the whole container had to be immediately fumigated and returned to the most recent port. In this case Shanghai China.
(It went from India to China to Canada)
After an inspection in China it was shipped back to Canada where passed customs, but got seized by the freight company until "somebody" pays the additional $8000 for special fumigation, storage, re-crating, shipping twice more across the pond, inspections fees, and on...and on....and on...
After 5 months I got it resolved and the faulty party is now being chased for the money.
So, unless you want a whole bunch of paperwork, additional fees, and an extra 5 month wait, make sure about the fumigation requirements.
Second item is the wood crating itself.
By US law all incoming wood crates must now be made from specially treated wood with proper numbered markings showing that it is insect resistant.
Check with an import authority and make sure you comply. One option is to not crate at all and leave the engines open for inspection.
Of course this creates additional problems of stability and safety.
Good luck,
veggie