all metal ect............10- 13's
wasn't thinking BALLS-OUT methanol or alki 500ci- 760ci classes....and yes I know they go bigger
I know a few guys that really like those 640 ci Indy's
would never in my life be able to buy one let alone build one

without knowing more on your specs I can't say ex how fast but I know the ball park= bad ass
ex wife's dad ran a best of 6.4 blown alcohol boat- funny watching them potato chips race............like it better with wheels
