We have a very nice drop in the sink and I was wondering if you can buy the kit to do so, under the mountain under the granite countertops, just had done? any help would be great or if not working properly?

Not Working well. Falling into the abyss raised rim and method of grabbing the bottom and if that gets under the bar, I think you'll find in most cases the high edge will too much of a gap in the flow affects the granite. Typically, lower and deeper than a subset, so if you put a drop below it will a great extent and there may be problems down the drain connection. If only the accountants had done, the hole must be exactly the size of the sub-scrub and receiver supposed to be the same size that fit within the opening, perhaps looking stupid.