Hello aspirant ,
I hope you are doing well and good. Congratulations on performing well in NEET examination. As you mentioned that you have scored 340 marks in NEET which is very decent score. As you asking for the sardar patel institute so u have to tell you that NTA not announced the cut-off marks of it is quite difficult to predict college now.

But according to previous year cut-off marks your chances of getting admission is very less with this marks.

Goodluck!