I think its time to get the facts straight again..:)
The Evinrude F1-V8 2-stroke race engine is still the fastest outboard in the world.
More speed, more horsepower than any other race outboard. UIM F1 racing today is forced to use a heavier boat but safety cockpits make racing safer. Merc have not built any 2.5 liter F1 V6 engines in a long time. The F1 rules today is more or less spec. engines. You can not modify the powerheads the way you want. Some drivers have been disqualified for doing so.
http://svera.se/blogg/still-the-fast...f1-racing-v-8/
http://www.screamandfly.com/attachme...5&d=1505402616