the sth 16s are off the market sorry.
the jesters sold, but I have another identical pair with 90mm brakes (perfect for the step ups!) that I'll sell for $165 shipped.
and the step ups were mounted center (they are symmetrical skis) for a 26.5ish. Honestly not 100% sure, so I just lined up a pair of bindings with the holes and lined up my 27.5 nordicas, they would work if I had the heels backed all the way out. And that is a 315 bsl.
Here is a pic of the actual jesters currently for sale
clownschool, get learned.