Isn't that the new BLADE? My first 2 sleds were JD's. loved the 440 Liquifire, but the sport fire ceased after 400miles. then about a year later they got out of sleds.
I've still got one. If i remember right its a '77-'78 cyclone 440. I just rebuilt the motor about 400 miles ago. I am gonna redo everything else this summer.