Great question and I have done some research on this,  yes 25 years or older you can register in the states (probably not California and other super blue states) and I have another option if that doesn't work (vermont)  
I have been wanting to ship my Land Cruiser safari vehicle from kenya to USA and have spoken with shippers and brokers,  the only reason I have not pulled the trigger is that I dont trust once I release the vehicle in Mombasa it dissapearing before getting on the boat and I will have NO recourse.  I have come very close a few times but always chicken out in the end. 
I have been succesful shipping items including vehicles from the states to Africa (mainly through Malawi) but scared to try the other way.   If I can find a reliable way to get them on the boat and over here I will ship Land Rovers and Land Cruisers,  old minis, VW buses,  FJ45's all day long!!!!