No matter where the truck componetry comes from or where it is made - it must conform to the the design and quality standards set forth by the head offices of these Japanese brand name companies.

Similar trucks models built in the US are different than those built in Japan for their domestic market from some respects - 1.) they don't need to comply to our CARB regulations; 2.) The don't need to comply with UL; 3.) Often the engines used in Jpan are smaller in HP than those use in the US. 4.) Three stage masts for counterbalanced trucks are a rarity in Japan.

I think you are hung up on content - most Japanese manfucaturers want to include as much US content in their brands as feasible to comply with the "built or made in the US" which allows them to participate without penalty on various government projects without penalty. Again they make those changes as long as they comply with head office standard of design and quality.