ok so i got an si cam shaft/ gear from a junker. i want to swap it into my 90 dx(d15b2 i belive?) i need to know what other things i may need to make it work, like do i need the d16 timing belt? will i have to reset the lash on my valves? i got the gear and the shaft, so what things will i have to re set and how do i adjust the timing, do i move the gear on the shaft, the belt on the teeth, or what? and, will the bearings fit into the stock races without binding?