Neither one puts out 5 hp but it seems like the Cen motor holds up a little better after they took care of the bearing problem. You might want to check out the rc universe cen thread they have some pictures of a port job that a guy over in France did to his Cen .46 claims its killer . The motor...
I had one it was pretty unimpressive until I modified it it came alive after that . I advanced the timing, did a port job on the sleeve turbo scooped the crank and put a larger carb on the motor. After doing those mods to it it was a monster!! I could not keep the front end down on my truckzilla.