well a quickie is a p1sc 12.75lbs with meth 4.6 to a 5.0 2valve ford one level above stock cam, stage 2 I believe, 5.4 natural gas heads so I believe they are pretty much stock, 2 core intercooler, and stock intake

it ideals at like 700-750ish according to the tach.

not sure what the timing is from idle from what the tuner put.

not sure if the intake is leaking but there is a hole in the header (collector)

 

11-12 inches sounds about right for stage 2. Stage 3 is even less....

 

Mine only gets 10-11" at idle. 750 rpm and 26* timing

 

so 11-12 in. is fine then. if I was to try to get more then it probably wouldn't make a difference!