Purchasing from a junk yard may be tricky. Most probably the owner handed over the vehicle to kabariya as it may no longer have been affordable for him.
Sure the parties wouldn't bother to transfer the vehicles through legal procedure as the vehicle was supposed to be used as scrap.
So purchase from Kabariya, find the original owner, find the original doucments (most likely not present, else pursue the owner to get a duplicate book, then transfer to you). And then you restore it. That's what i think. Anyone knows a better procedure, please share.