If you are going to buy a Roush go with a 2010 540 “hammer” which is a build internal motor or a 14 with the aluminator motor which again is built. The standard motors are limited. I had a 2012 RS3 Hyper Series that most tuners would tell you not to go too far over 600rw as the motor wouldn’t take it. The 2010 hammer and the 2014 aluminator motors are built and handle mods better.
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