Originally Posted by HandleITrc.com

Not necessarily. The Bonito has tons of bottom and is a better engine for any truggy.
A 4C will work but you'll find yourself looking for more power. The 4C engines are not known to have a strong top end power band.
The BTT has a different cut on the rear exhaust sleeve port and engine case, which increased the overall power band, allowing the engine to pull harder at top end. While still keeping the great smooth but aggressive bottom end power.