Inliners International Forums General Discussion Blown and Injected newbie here and looking for some ideas

whats the advantage of the 250 crank and where can i get one.
also what rods are available stock and after market.
i want to spin this engine 6200 to 6500 rpm hows the harmonics of the engine with a 250 crank in it. i was told the rpm i want to run there wont be a problem with the rpm up to 7000.