The movie "Jay Jay" borrowed its title from the name of a book, which one was it, The book also features in the movie?

"Jay Jay Sila kuripugal" by sundara Ramasaamy

When the issue of naming films in tamil came up, director K.S.Ravikumar when questioned about this jocularly stated if the movie he was making could either have these tamil translated names which would be funny, his movie ultimately took more than two years to make it to screens, but the names he remarked also released. Can you name all the movies?

his movie: Godfather (later released as varalaaru)
other movies were Thagappan saamy (released with Prashanth as lead), Appasaamy (Chidambaratthil oru appasaamy was initiall titled just Appasaamy which also released before varalaaru)