You're welcome Bill, glad to help. I use the "advanced search" feature and narrowed it down to the Trailer Talk forum. (My selective memory recalled the conversation, funny how that works sometimes and other times not so much!) Also, sometimes you have to play with the words you put into the search box; ie - shock, shock absorber, Tee Nee shock, etc...
You will want them about 9 inches collapsed and 13 extended. Make sure you get the right (round) top and bottom. Also you will need the spacers that are now in you old shocks.
I followed MarkS' info link, and bought a pair of MONROE 33076UMM.
They seem to have the dimensions you mention, and have round holes top & bottom.
Also noticed that I will have to use the old hardware to stand off the shocks from the frame.
I assume that the little metal collars inside the new shocks will just press out, and are not fused to the rubber ?
Any suggestions welcome.