[TonyMadrid]

Roscoe is right - use C- Clamps. In fact, once you have the mounting locations marked and drilled you will have to use C- Clamps.

After I drilled the mounting holes, I attached the mounts to the motor and lowered the assembly into the frame. When I did that the frame mounting plates were about 3/8" to 1/2" away from the frame rails. That's where I had to use the C-Clamps to gradually pull the plates to the rails so I could insert the mounting bolts.

Gerry, I would recommend that you use Grade #8 bolts to mount the brackets to the frame and also to attach the mounts to the brackets.

Tony