I purchased from this company. They are Tuff Torq dealer.
http://mulliganspartscompany.com/k66-series/
Contact is
Bobby Brown
Mulligans Parts Co.
617-694-1500
#3
Boobala
I know this is a K66Y and you're needing a K66L , but this MIGHT work, you'll have to check around, hope ya make out OK !