Powertrax offers an LSD for the SLA 35:
https://www.summitracing.com/parts/pwt-gt443527/make/ford/model/ranger/submodel/xlt/year/2011
Last I checked. Torsen STILL was out of stock since when I last got an email from them in late 2019 or early 2020 where they said they had some in stock and were expecting to release them for sale in the spring. They didn't mention a year, maybe they meant this year...
In any case, I plan on getting the Powertrax. I'm done waiting on Torsen.
EDIT: I just did a recheck on the LSD I linked. That is for the rear only now. I guess the front will have to stay open...
EDIT of the EDIT: They list a Dana 35 but say it's only for the rear. Summit must have their wires crossed somewhere. I'll have to give either them or Powertrax a call and find out what the real deal is.