Tried Optiontown for IT. However as noted below.

"Please be advised that due to a recent policy change by Kingfisher Airlines, currently only Y and K Fare Classes are eligible for upgrades and if you are booked on a different fare class, we recommend you not to Sign-up currently and check back later for any change(s) in this rule."

Y and K fares are very close to J. They are not discounted.