Outer Limits 4x4 Board

Hi to all , im in need of some parts for my 87 RR transfer and was advised that there are 2 different cogs for that year/transfer box and there should be a prefix / number on the case somewhere .The only numbers i could see was the ratio of 1.2222222222 on there , so i was kinda hoping for a slap behind the left ear as to where i would find this ????
Finally fixed my timing cover up , great fun -not and now running "Redline wetter water " .
Having also had a Haltec E6X fitted up made an incredible difference over the ol Lucas AM system , but still having a few bugs sorted like it won't idle smoothly until at operational temp of 84degs .
anyway seasonal greetings to all

what was wrong with your timing cover ??? what did the Haltec E6X cost???

Number is stamped on rear left of transfer case, just above bottom cover plate or below the PTO cover plate.

Thanks John , will get out some more degreaser !!
The timing cover got eaten thru between the 2 water ports with cancer , it looked like a pepper pot there were so many holes . The Haltec was $1545 with all sensors and stepper , i had the dizzy done as a hall sensor and paid this "expert " -note used loosly- to fit it up .He did the fitting not as i wanted it as he wired the ecu under my drivers seat when i wanted it hight up , and he didn't dyno it ! He just drove around with the laptop and apprentice in the pass seat adjusting it .So most of the problems i susspect stem from that .
The Haltec does free up the motor alot and in all honesty you don't get the horse power they say you do [ i was quoted 35% ] but recon its more like 20% the fuel econ went up by 65 km per tank around town . The biggest benifit is the loss of that damn air flow meter and all the wiring that goes with it

Some may disagree but when tuning motec usually do a lambda tune (Motec feature to get a rough tune using O2 readings from sensor in exhaust, not the factory one, usually a bosch one) and then you drive, in my case usually round a track (no not the 4wd) and tune it that way.
Tuning while driving in all conditions i think is better than dyno, not to say a dyno isn't useful it is for lots of things like full power runs but nothing beats real world.

E