My friend is a cat mechanic and went to service school in thief river last week. He told me they had an F7 with a wheel kit on a runway doing 130+ mph..........also he said he saw an F7 with 800 jugs that was a prototype. theF8 was 170hp but only ran on 110 octain fuel.......you can bet on a consumer model F8 soon and expect about 155hp.