[Smokey]

they're definitely not down on power compared to the others in their classes.

They're tube frame cars, so as Phil mentioned they were able to place the motor wherever they wanted. (low and back). In the instance of the Speed Source car that Phil posted, you can see it's so low that they moved the adjustable sway bar to go over the engine instead of below.

I could get close enough to see that the motors are definitely PP, and are using rotor housings stamped with 13b, and they're using the 20b thick iron. The intake setups on the other Rx8 teams were almost exactly the same, so either the rules are pretty to the letter on that, or Speed Source is building and providing motors for the other Mazda teams....not sure on that one.