There was a bike built in Germany that actually used a YB head for its engine

Kawasaki did a turbocharged GPZ 750 in the 80,s

I used to have an RD500 and a mate has a collction of RG500,s RD500,s and NS400,s proper nutter 2 strokes when the power band kicks in - cannot imagine how much of a boot this would give if you had the turbo kicking in lower down the rev range as well