Seen turbine powered Beavers/Otters/206/207/Bonanzas, and even a turbine C195, but have never seen a turbine C185 - for sure some Yank has done it
Typically when a Bonanza is converted the top of the green becomes the redline IAS and turbines eat fuel at a prodigious rate so need tip tanks and oxygen to get the range out of them. Sure they climb great but unless its a skydiving aircraft I can't see the point - but Yanks seldom need 'a point'