Here is a defunct website (pre-2008 crash?) that shows pictures of various styles of High Top transition trim: v-sales.com/vsrepkits.htm. I have found useful (dated??) info on the old site (and the "sister" site: dcmco.com).
Mine looks like the "Edge Trim - Black". I plan on measuring the width of my trim first and then emailing/calling the new website (https://www.rvandvansurplus.com
) and asking about availability. I am also still searching for other sources for the trim.
I also came across a negative forum discussion (from 11 yrs ago) regarding the new site and bad service. I imagine they were struggling to keep their head above water like so many others in the lead up to the '08 crash. Apparently they are still in business so I'm not going to worry too much about it.