if your running anykind of decent stall in your converter your not going to feel that hard bump that shift kits make you fee in a stock type (tight converter).
its makes no sense to me why you would feel that bump in 3rd gear and not in 1st or 2nd ??????
but i am not a tranny guy..only ran a bunch of them and know how they feel.
Brian
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Bjuice..
"I'M YOUR HUCKLEBERRY ! "