i got 160 marks in jee main paper2 excluding drawing test.can i get a good NIT or GFTI

You have not mentioned your category, it would have been easier to predict if you would have done so.
As of you know that We have 3 hours for the exam and three subjects and Marks distributions are

Maths-304=120marks

Aptitude-504=200marks

Drawing -70marks

Total= 390 marks

Considering you get 70 out of 70 in drawing portion
Your total score then would be 230 so,

• If you are a general category student you no rare chance to make it to NIT or top colleges.
• And if you are a OBC category student still you have very rare chance, since previous year i.e 2017 my fried scored around 220 and he didn't got college, but still there are rare chance.
• Similarly, if you are a Sc/st student then you have chance to get admitted into these top prestigious Institutes.

A score above 250+ or equivalent would have landed you on NIT or GFTI for general and obc category

Thank you and best of luck :-)    .