AMC Motor Mount Clamps
All AMC motor mounts come with clamps, but this is a very common item to fall off.
The RX8 mounts use a single hole clamp, the Sidewinder uses a single hole clamp that is offset, and the shifter mounts use a double hole clamp.
They come in 90mm spread or 92mm Spread. To determine what size clamp a particular chassis needs, please measure with a caliper using this procedure: First, measure frame rail diameter, then measure total distance outside to outside where the motor will go and subtract the rail diameter from this number. (Example: 122-30=92mm center to center).