Hello Mihir,
Congratulations for getting such a good rank in exam. As your rank is high you can get admission in many engineering colleges in Gujarat. If you are worried about which branch to take and which not, I would suggest you to take the branch in which you are interested. I have done some research and got the last year cutoff. Here are some of the colleges where you can apply -
1) ADITYA SILVER OAK INSTITUTE OF TECHNOLOGY AHMEDABAD
2) Parul Institute of Engineering & Technology, Waghodia, Vadodara
3) Government Engineering College, Modasa
4) Government Engineering College, Rajkot
5) Vishwakarma Government Engineering College, Chandkheda,Gandhinagar
6) Ahmedabad Institute Of Tech, Ahmedabad
7) L.J. Institute Of Engg And Tech., Ahmedabad
I can't assure you the branch as you are not confirmed. Hope this might helps.
Good luck.