First off it is ROUSH....(Yes I am ANAL about the spelling
)secondly compare apples for apples from the crank to the water pump and starter that ROUSH includes in their motor.
Also don't forget the 2 year 24k warranty where if something goes wrong with the motor ROUSH will pay the dealer to remove and ship for repair as well as re- install.
Will PE do that?? Is the PE dyno tested and run in prior to shipping.
I am not saying anything negative against PE just compare apples to apples is all.