Lister Petter identification- LPWS4?

[Steve56]

8 hours ago, Harrington II said:

It may be a bit late but I have a Lister LPWS4 year 1989 build number 45 and it is nothing like the one in the original post.

Seems odd. The marine version of the LPWS4 was not introduced until the early 90's when the only marine build was a 42. The build 45 only followed on a couple of years after that.

[Harrington II]

My engine was "one of the very early 4 cylinder engines" and in 2016 was stripped to the bone and rebuilt by Lister to the latest specification.