Dear pranav 

What you want to apply for is called Lateral entry which gives you admission into second year if you have got diploma.  But that also means your aggregate should be good as well. Your aggregate being 63% does give you a chance to get admission into many good colleges in pune. But yes you can get other medium level college for yourself or you can apply for  management seats. I hope it helped 

Hello Pranav, As you have completed your Polytechnic degree you can choose some good college's in Pune.

Some of the good college's are

MIT Pune

DY Patil Engieering college, Akurdi.

AISSMS

Yes sir,  

I would like to list down some collein pune for engineering as follows in which you can take admission:

• ISB&M GROUP OF INSTITUTIONS ( ISB&M) ,PUNE
• COLLEGE OF ENGINEERING, PUNE ( COE),PUNE
• D.Y. PATIL COLLEGE OF ENGINEERING ( DYPCE),PUNE
• DHOLE PATIL COLLEGE OF ENGINEERING ( DPCOE),PUNE
• PDEA COLLEGE OF ENGINEERING ( PDEA PUNE),PUNE
• JAYAWANT SHIKSHAN PRASARAK MANDAL S RAJARSHI SHAHU COLLEGE OF ENGINEERING ( RSCE),PUNE
• SHREE CHANAKYA EDUCATION SOCIETY S INDIRA COLLEGE OF ENGINEERING & MANAGEMENT ( SHREE CHANAKYA),PUNE

Also you can ask in comments for any other query related to this