Advance Auto Parts has 2 listed under SC they are about $40.00
I called and ordered one over the phone and told the guy I had a thunderbird because most parts stores don't specify model only engine if you are ordering engine parts. Anyhow I got one from Monroe for a thunderbird. I came in to order another one and he asked if it was an SC so I said yeah. We couldn't find the listing for the monroe mount, so he looked up regular TBird and it was there. I ordered another Monroe mount.
They fit fine so if you need to put the actuator back on, just put the bracket and the extra bolt on the top after you tighten the top mount on the shaft.