Ford "Install the intake manifold and tighten in the following sequence, loosely install bolts 1-8, tighten bolts 9-16 to 11Nm (8 ft-lbs), tighten all bolts to 11 Nm (8 ft-lbs) in sequence,"
facing the engine from the front, the bolts on YOUR left are bolts 1-8, and the bolts on YOUR right are 9-16, the left closest bolt is #1, and the left last bolt is #2, then the rest of them go in sequence from front to back, so the left goes, 1,3,4,5,6,7,8,2. The right side is the same but backwards, right side (your) from front to back 10,16,15,14,13,12,11,9.
I am not sure it makes all THAT much difference but better safe than sorry.
OH, also, watch out for those pesky tabs on the intake gaskets, they have to go inside and face up.
2003 Ford F-350 King Ranch Crew Cab Short Box, 6.0L Powerstroke, DashDAQ, custom rear diff cover, DIY egr delete, air cleaner, fumoto drain valve, DIY coolant filter, JVC NX7000 Nav system Sirius/Bluetooth, remote start/alarm, spray in box liner, DIY Britebox and custom power feed, DIY High Idle, big HFCM drain plug,