I had to drill out the side holes to bolt cast mounts to plate because the tapped wholes were not drilled and tapped straight.
Very Solid System Just got my HD Motor Mount assembly. At first i thought it would not be long enough, but it just fit perfectly on my .7 liter gas bike frame.. I have not painted my bike yet until all my personal up grades are made to my frame. I could had waited to order it with my motor kit but that will be the last item to buy. I know. The kit includes the motor mount, but this one wont have the bolt threads outin the open. Besides. I might all use the extra parts on my old BCA Mountain bike frame.