I just put head gaskets on my E350 5.4 SOHC motor, and now it wont start.
Cranks, sounds like it has compression, has 40lbs of fuel pressure and spark.

Im getting a crank signal on the pcm obviously cuz it has spark, but i notice the 02 sensors,
o2 sensor #1-1 is reading good
o2 sensor #2-1 is dead
o2 sensor #1-2 is reading good
o2 sensor #2-2 is dead

ALso, where is the map sensor on this truck?? is there one??
Any ideas, its gotta have something to do with the 2 dead 02 sensors, but i check all wiring diagrams and cant see any reason why the 2 left 02 sensors are dead, and not the right 2 , i get a long term fuel trim just says "ERROR" on bank 2

Please give me some advice.