its basically a 540 hammer roush that they made in 2009 etc. My friend has a hammer and its nice, put out 500rwhp/tq stock.
^^^thanks for clarifying that in regards to the Hammer....the P51 was the first Roush with the handbuilt, forged engine and also included the Stage 3 suspension....if I am not mistaken...lol
Nice....it'd look even better with the 20" 427r rims on it.