That's the site I was on .... what I didn't realize is that it takes a L-O-N-G time to load! Once I waited, the purchase link came up and I was able to order the BT-13 (for $14.00). A few hours later confirmation showed up in my in-box and I was able to download the file. HOWEVER, the flight instrument panel.cfg aliases Lockheed_Vega gauges. I'm running FSX Steam which doesn't have a Lockheed Vega. Was it used in FSX or FS9? Any way I can get my hands on one? Or, could I edit the cfg to alias something else? I'm going to try to contact the author as well and see what he says.
Ken