Cox Tee Dee .15 (I think)?
DJLyon, the Cox Conquest was designed by Bill Atwood, his last design before he passed away. K&B had no part in the design other then assuming the rights to the motor from Cox. If you can find pictures of the experimental 29 and 35 that Cox prototyped but never produced you will see that they had a lot of the conquest in them and they were designed before the 15