Sorry for the delay, find the pic..
Hi Varun,
Thanks a lot. I think I can get this done myself with some juggads.
I was able to finally get my hands on the lever with great difficulty. I literally visited almost all shops behind the JC road and finally got one. It was the last piece that guy had and he said you are lucky to get one. People restoring old cars like ambys have created a great demand for it he said.
I also checked MGA and TGA shops again. Indicas have only fuel lever and I could not get any other Tata car's.
Anyways, yesterday I was able to modify the hatch lock to look similar to the Alto's (no push, just turn to unlock) and secure it. Now I need to figure out a way to convert the circular motion of the lock to linear motion to pull the release handle. I will keep you updated with the progress.