Adding a diff to the Miramar?

By accident I found out that a Miramar with the welded diff is a GREAT offroader, but the overhang causes it to get stuck sometimes.

So, I want to add 4WD. Any idea how to? I tried following the tut on the wiki but it wouldn't work for me.

Here's the code that isn't working:

 

well, you have a part for the front differential slot just fine. Except the mirimar has no front differential slot and your differential is still set to use RL and RR wheels.
You need to add a front slot and change the diff to use FL and FR

 

How do I add a slot? I already changed the RL/RR to FL/FR.

 

Trying to do the same with the miramar. How do you add slots

 

Well its pretty simple, but it is easier to put both differentials in the engine slots not the suspension slots (I've tried it), Here is some code from 0.5.6 that I didn't feel like updating:

Code:

BEFORE

{
"miramar_suspension_R_race": {
    "information":{
        "authors":"BeamNG",
        "name":"Race Live Axle Rear Suspension",
        "value":1200,
    },
    "slotType" : "miramar_suspension_R",
    "slots": [
        ["type", "default", "description"]
        ["miramar_brake_R_alt","miramar_brake_R_race", "Rear Brakes"],
        ["wheel_R_4","steelwheel_11a_13x5_R", "Rear Wheels", {"nodeOffset":{"x":"$trackwidth_R", "y":1.27, "z":0.32}}],
        ["miramar_wheeldata_R","miramar_wheeldata_R", "Rear Spindles"{"coreSlot":true}],
        ["miramar_spring_R_alt","miramar_spring_R_race", "Rear Springs"],
        ["miramar_shock_R_alt","miramar_shock_R_race", "Rear Shocks"],
        ["miramar_swaybar_R","miramar_swaybar_R_race", "Rear Swaybar"],
        ["miramar_differential_R","miramar_differential_R_race", "Rear Differential"],
    ],

AFTER
{
"miramar_suspension_R_race": {
    "information":{
        "authors":"BeamNG",
        "name":"Race Live Axle Rear Suspension",
        "value":1200,
    },
    "slotType" : "miramar_suspension_R",
    "slots": [
        ["type", "default", "description"]
        ["miramar_brake_R_alt","miramar_brake_R_race", "Rear Brakes"],
        ["wheel_R_4","steelwheel_11a_13x5_R", "Rear Wheels", {"nodeOffset":{"x":"$trackwidth_R", "y":1.27, "z":0.32}}],
        ["miramar_wheeldata_R","miramar_wheeldata_R", "Rear Spindles"{"coreSlot":true}],
        ["miramar_spring_R_alt","miramar_spring_R_race", "Rear Springs"],
        ["miramar_shock_R_alt","miramar_shock_R_race", "Rear Shocks"],
        ["miramar_swaybar_R","miramar_swaybar_R_race", "Rear Swaybar"],
    ],
Removing the differential from both the race and regular suspension made it just so much easier.
Then you have to add both slots to the Engine.jbeam, recommend you have this as a mod style format so no actual game files will change.
"miramar_engine_4.0_dohc": {
    "information":{
        "authors":"joelebauer01",
        "name":"4.0L DOHC I6 Engine",
        "value":2500,
    },
    "slotType" : "miramar_engine",
    "slots": [
        ["type", "default", "description"]
        ["miramar_exhaust_dohc","miramar_exhaust_dohc_race", "Exhaust"],
        ["miramar_transmission","miramar_drag_transmission", "Transmission"],
        ["miramar_differential_F","", "Front Differential"],
        ["miramar_differential_R","miramar_differential_R_race", "Rear Differential"],

Now make sure you add the parts in the engine jbeam file and I'll attach my zip for the 4WD in case you want to have a look and if it still works.
--- Post updated ---
Also I forgot that my insane engine was in there.