Just pulled this from another forum in regards to homemade trikes and TX
Eligibility for Title Homemade vehicles are not eligible for title or registration. Homemade vehicles are described as vehicles that were not previously manufactured by a NHTSA approved manufacturer or a vehicle created by merging two or more vehicles from different vehicle classes that were never engineered or manufactured to be combined with one another by the original manufacturers of those vehicles (such as a motorcycle front and the rear of a Volkswagen Beetle).