Not until this coming season we haven't. There simply was not enough room, and we had no issues with starving the pump. There was no point in making one.
This was in an application making 1300 crank HP.
Our new combination will make upwards of 1800-2000 HP, and as such, we're moving the radiator to the bed, and replacing the radiator with a 2-gallon surge tank.
The surge tank will be fed by a belt driven Enderle 110 (13.2 GPM), while the motor will be fed by an Enderle 1200 (18.5 GPM).