Really its up to your preference. I know a lot of people running high power setups and using Type-r and B16 trannys, actually i know more running those trannys rather than the LS tranny. But i personally prefer the longer gears. So since you have the B16 tranny try it out and see how you like it. If you find the gears are really too short, try a larger diameter slick and if that doesnt help sell the tranny to get a LS one.