Car is registered in your name, book will be delivered on production of the RECEIPT to you. Keep the receipt, do not sign transfer letter. When book is with you, collect the balance amount sign the transfer paper & deliver the book .. easy ?
or else whats the hurry, book delivery will not take 36 weeks anyways right ? Give buyer a cut off date and hold the car we all know legal value of legal signed papers and our judicial system very well -