The speed pro pistons will get you in the 9.2 to 9.5: compression area, but have no quench effect.
The KB107 is closer to a zero deck flat top which will increase compression over the speed pro piston.
You should CC the heads and that will really help in calculating the compression. I built my 9.5:1 engine with the KB-232 0.050" quench pistons, but it requires alot more machine work. The piston is designed for magnum rods pin widths so the machine ship had to mill the pin end of my rods, the block was decked to square it up and get the pistons near zero deck height, then the heads has to be decked between 0.040" and 0.050" to set the quench pad to the recess area of the head (zero clearance without gasket.) The gasket provides the quench clearance. For a simple 9.5:1 engine, I don't think it was worth all the extra pains just to gain a small amount of quench area. I think if I was doing a simple 360 with 9.5:1 compression, I would just use the speed-pro pistons.