I imported my buell from the middle east, hand carried 4 suit cases, Wheels,lights, all the removable stuff in with some help from friends. Imported redneck frame from the states and engine from the middle east. Flew it all in Thai airways. Import and shipping on the engine was around 75,000 baht and about the same on the frame. Once here bike was put together, paid another 50,000 baht for the super samit tax excise tax, and am now in the process of getting a green book.
It is possible to do it but is not really worth all the head aches and wouldnt do it again.
Cheers
Rigger