In Kansas for vehicles 1949 and older all you need to have is a Bill of Sale from a Kansas resident. Take that to the License Bureau and they will fill out the paper work for a title. You must however have an "identifying number".
For vehicles over 35 years old but after 1949 you can take a bill of sale from a Kasas Resident to the Kansas Highway Patrol for an inspection. The vehicle must be 90% complete with motor, etc from the same era. I have never had one turned down, however i wouldn't try it with a '51 with a v8 in it.