My Novak 13.5 SS is rated at about 190 watts.
My Brood Cobalt 27 turn stock has been dyno'd at 131 watts.
I know which one I would be putting in my car!

We have 13.5 or 19 turn spec as our class. I can guarantee the 13.5 KILLS the 27 turn motors. I have tested it first hand

Also, power aside, the 13.5 can be gear to high heave compared to the 27 turn. I had my 27 turn at 5.5:1 FDR. The 13.5 is at 4.8:1 and i'm going lower this weekend, probably as low as 4.5 or more......