If I recall correctly there are two nuts per cylinder. If you are sure you got all of them, then the only other thing attached is the metal tube from the EGR valve that goes around behind the engine to the exhaust manifold. It doesn't flex much so could be the thing you are running into. There are also heater and bypass rubber hoses underneath there but you can move them quite a bit if they are still attached.
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95 Isuzu Trooper Daily Driver
86 Isuzu Trooper reliable backup
77 LUV 2wd stock beltway blaster (resting)
79 4x4 LUV project: 2.6L, 5spd, 31s (eventually)
MEPR: Man, my 4x4 makes all other LUVs look good
