The GTX-1660 is installed and operational. The HDMI->VGA converter worked great. No having to start out with HDMI. This is the adapter that I bought:
https://www.ebay.com/itm/HDMI-to-VGA...53.m2749.l2649
I had previously downloaded the latest driver, so once the system came up, I installed it.
Now, when I get a chance, I'll have to play with UHD->25BD conversions.