Cheater slick

So i ended installing the one mickey thompson cheater slick and it made 80percent difference, i can hear the other tire spinning bit maybe ill try and low tire pressure a bit? what do you think?
I
I found slapper bars to be the biggest bang for your buck (besides a good drag radial/or slick) for an open rear end. I don't care who or how many says different. I'd put slapper bars on it and set it up right. Here is my explanation video on why I use slapper bars on a open rear end with stock leaf springs