Rajadhi Raja
Rajathi Raja (original)
A rich estate owner is killed by his second wife and her brother Aadimoolam. The estate owner's son Raja returns from USA and learns of this. In order to bring the culprits to book, he makes his friend Sethupati, a rickshaw puller, act as Raja.
Starring Rajinikanth, Radha, Nadhiya, Janagaraj, Radha Ravi, Y. Vijaya, Anandaraj, Vinu Chakravarthy
Watch "Rajadhi Raja" on Amazon released in 1989. It's a comedy and drama movie, and has a rating of 6.7 out of 10 from Imdb which is usually fine for this kind of movie, and is currently only available for purchase or rent.