looking for LSD for 99 audi

I checked ECS and didn’t see anything. I know Statis makes one but I’m not sure if that is spelled correctly and can’t seem to find it because of that.
EDIT: thats because it is STaSIS
http://www.stasisengineering.com/Category_Detail.aspx?id=9&YR=1999&MK=Audi&EN=94&PID=134