Which factory air box is better? My 93 came with an air box where the inlet was behind the headlight using a plastic piece with a hole in it, One of the mounting tabs on old box is broken off so I got a new air box when I bought a used MAFM from bottom of air box to the TB inlet and I just noticed it's different even though the 2wd was a 92 and it also a 22RE and the 92 inlet is beside the radiator behind grille and use the same hole as the carberated inlet goes and brings in air from the outside unlike the old box which the intake tube went behind headlight...I'm not doing mudding or deep water crossings, just back country and the Badlands in Attica Indiana offroading, so having an opening in the front grille no need to worry about sucking in water.
I'm not interested in a K&N system or equivalent just yet, maybe later...
Below are the pics of each system...

Old area where air is gotten...



The whole old air box assembly...



The opening the new box will use...



The whole new air box assembly...



The old system looks restricted, I had an 87 22R carbed truck that used the hole beside radiator and behind grille.

 

both systems are garbage. remove the stupid tube that goes into the headlight. it will give you some more breathing room. also remove your intake silencer. quick search will show you how simple it is, both mine cost me absolutely nothing i used spare parts i had from previous parts vehicles.