single good plan... there's enough there. Figure out your intake path and be prepared to do interesting things. I got fine clearance except for just a 1/2" around the upper plenum. The 4v engines are kinda tall so try and limit the intake height or plan on a pretty tall cowl.
02silver.. no good even contemplating a truck intake unless you're prepared to significantly alter (read remanufacture to something completely different) it to resemble a more performance oriented unit. Torque peaking at 2900rpm is no good... you've still got 90% of it at bloody idle even if it doesn't peak until 4K. Let em breathe a bit. Those long runner jobs are great for towing crap out of the mud but ideally you'll never find a mustang in that position in the first place.
Now, if you wanted to get goofy and use a truck intake, you'll need either a 5" cowl (ish) or a rather sizeable hole. A shaker is cool on a mach1 hood but a R hood kinda looks a little busy for having another distraction cut into it. I'm thinking about a mach1 hood with a boss429 style scoop but that's a ways off.
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