Turbo 650...

yep

I think Honda bumped the displacement to 650 on the CX motor when they made it into the Turbo.

Suzuki XN-85 was another Turbo, as was Yamaha's Seca Turbo.

Honda, Kawasaki, Suzuki, and Yamaha all built Turbo's in the mid 80's, but Kawasaki's GPz750 Turbo was the best of them all.

Yea, the GPZ750 with the FI turbo was real nice, so I will retract my opinion slightly. I'd still love to have one of them.