Imagine this without the spreader.

Here is where I drilled the chassis mount. 

I now think it is about 10mm too far back. 
You use the Sammy mounts minus the C shaped spreader ( you may wish to drill the locator hole just above it)
You can get into bolt it up but my sausages would not fit, 30 seconds with a grinder makes changing the mounts a one minute job if they ever break.

The mount has about a 2-3 mm gap at the bottom but the engine is rock solid.