**How much power can an A904 take?**

With 1000 ft lbs you may not need a 3 speed. The "powerglides" that most Super Series racers use today are all aftermarket parts and can take the kind of power you will be making. I am not suggesting you use one, but the 2 speed is an option and would be cheaper to to buy than a t/flite for high hp engines. Just another option.