Hello,

With our marks of 64 in JEE Mains, the rank is definitely above 2 lac and thus I can expect OBC rank of above 75k. I would say you have little to no chance in any of the lower NITs even in any lower branches. Of all the NorthEast NITs you are aiming, you can most certainly forget about the NIT Silcher and NIT Agartala. Other NITs also close in pretty much around 20 or 30k (max) OBC rank.

Talking about your chances in Assam University, with all India quota, you can most certainly forget about that too as it also closed in and around 20k OBC rank. Though you might get a seat in some branches via CSAB Special round (some candidates with a rank around 3 lac also goat a seat). But my advice will be to keep looking for other state government colleges also along with JoSAA.

I have not considered home state eligibility for NITs and you might easily get a good seat with home state quota in lower NITs also.

Thanks.