What is the fastest 21 Challenger/Superboat?

[thebone69]

I would like to know what is the fastest anyone has gotten this hull up to. I remember reading here a while ago that some with twins got theirs up to a 104 mph or something like that. Also with a single what do you guys think is the fastest this hull will get do. Thanks

[jerry]

there is a guy on longisland , joe he is going 99 gps with a light 21 superboat. there was a guy 2 years ago with a 22 progression going 101 gps . both have 300x's