Look at the picture below and measure the Center to Center of your Steering Wheel screws. It will be 2-3/4" or 2-15/16" Center to Center. Then you will need to know if the thread pitch is 5mm or 6mm.
From our experience in the past 10 years, we have determined that 99.9% of the 2-3/4" center to center measurement have 5mm threads and the 2 -5/16" center to center measurement has 6mm thread pitch. Then just pick the style screw head you have and that should be all you need.
Choose what style Screw Head you have by looking at the pictures shown.

Measure Center to Center

Choose screw head style
Install Instructions: Make sure Motor and steering wheel is straight, take the bolts out of the steering wheel center, place our steering spacer on top of your steering cog, then put the steering wheel on top of the spacer. Then align holes and install the longer screws we send with it, tighten bolts.
Installation Time: Approximately 5 minutes.

