Revisiting the Control Pack PCM location, here's a better shot of its location. Since the factory '11 Mustang GT's PCM is located at the front passenger side of the engine compartment, that's where the engine harness ends up at as part of the crate engine. Naturally, it made more sense to find a similar location for the Control Pack PCM. That's why Jake chose the inner fender/framerail area. Since the upper radiator hose and air intake are on this side of the engine compartment, space is at a premium, and with an 18x9 wheel and tire in the wheelwell and the cold air intake ending up in the inner fenderwell, this side of the engine compartment/inner fenderwell is crowded.