Hi PS,
this may be of help
https://lifeattheendoftheroad.wordpress.com/2011/11/17/cyrils-in/ that's one of my old one's still doing Stirling service after 50 years or something. I cannot emphasize enough that it should be mounted 'rock solid' with no rubber mounts or flexible exhaust piping. An SR2 needs at the very least a ton of concrete, two really.

He's better mounted a little further away from the wall than Cyril and preferably high enough so you can easily drain the oil and service him without getting a bad back.

I've fitted half a dozen or so Listers in remote 'off grid' properties over the last thirty year. The only one that's not still running is this one.

Some clown burnt the shed down with Mr Lister still inside

Good luck, Paul