I was on a forum a few months ago (not sure if it was this one or not) but i read a thread about interior specs of an 04 or 05 and i was just looking around and managed to find them, so this is to that guy hope it helps!
Front Head Room40.9 in (40.9 min/40.9max)Front Leg Room41.3 in (41.3 min/41.3max)Front Shoulder Room66.5 in (66.5 min/66.5max)Front Hip Room65.8 in (65.8 min/65.8max)Second Head Room39.6 in (39.6 min/39.6max)Second Leg Room32.7 in (32.7 min/32.7max)Second Shoulder Room66.7 in (66.7 min/66.7max)Second Hip Room66.5 in (66.5 min/66.5max)
~04' F-150 Lariat 5.4 Extended Cab 4X4
-2.5" Front-end Leveling kit
-52" and 20" Led Light bars
-Flowmaster Super 44 Series Exhaust
-Realtree MAX 5 vinyl