Yes, with 987 marks in the AP Inter board examination, you have a very strong chance of getting a CSE seat at SASTRA University Thanjavur. Your score is highly competitive, especially for admission through their Stream 2 (100% weightage to Class 12 marks). Even with JEE Main scores, your high IPE marks would significantly improve your chances through Stream 1.

Stream 2 (IPE Based):

SASTRA uses a normalized score for Class 12 marks, and with your high marks, your normalized score will likely be very competitive.

Stream 1 (JEE Main + IPE):

Even if you have a decent JEE Main score, your high IPE marks would greatly increase your chances of getting a CSE seat through Stream 1.

Competition:

While 987 is a strong score, it's important to note that SASTRA is a highly sought-after university, and there will likely be competition for CSE seats, especially through Stream 1.

Recommendation:

Apply through both Stream 1 and Stream 2:

If you have a JEE Main score, it's advisable to apply through both streams for a higher chance of admission.

Check the SASTRA University admission brochure:

Review the official brochure for specific details on eligibility criteria, normalization of board marks, and the application process.

Stay updated:

Keep an eye on the SASTRA University website for any updates or announcements related to admissions.