Thank you S'land...a very interesting challenge. Strangely it was your first clue that worked for me...the Koller engine. Just took me time to find it!
Carson1934...a belated welcome to this group. I'll leave the more longer serving members of the group to answer your question, but I guess if it goes quiet for a day or two, then someone else can post. Having said that it is up to the winner to declare "Open House" if they have nothing to offer.
Here's something a little different:
