I bought a complete 1966 C10 here in SC. Not saying that things work here in SC the same way as TX, but here's my story.
1966 C10 without a Title. No paperwork at all.
SC DMV will not allow a private individual to apply for ownership of an abandoned vehicle (although they used to allow this).
So I took the C10 to a repair shop near me. As a business, the repair shop could claim it was an abandoned vehicle and apply for ownership.
I hired a lady to do all the paperwork since I didn't want to burden the shop owner with paperwork. He was doing me a favor.
Took about 3 months to clear all the paperwork and have the Magistrate assign ownership to the shop owner. Police had to come see the truck and record the VIN and then search every state for possible "stolen vehicle". I knew it wasn't stolen because I bought it from the son of the original owner (who had passed long ago).
Shop owner took proof of ownership to DMV and a new title was assigned to the truck in his name.
He sold the truck to me for $1. Meanwhile, I helped scratch his back by selling off a lot of unused NOS inventory he had laying around the shop.
Took better part of 6 months and cost me about $200 of pocket money. Shop owner didn't have to lift a finger except for the trip to the DMV to get the title in his name.