Yes, the BO 105 LS was a Eurocopter Canada project, with the production LS A-3 certified in '86 and entering service a year later. Used the same 'odd man out' Allison 250-C28 donk as the 206L-1 LongRanger, an uprated transmission, and has the CBS's stab aug system fitted as standard. Increased MTOW and improved performance, but it had shorter legs and a smaller cabin than the CBS. The final 'Superlifter' external-load variant ('95) featured an improved tail rotor carried over from the BK 117.
I've never heard of a non-LS aircraft being STC'd to LS specs.
I/C