First, go through all that dreaming and "narrowed" is the best you can come up with? Re-dream with 38" tires minimum to justify the expense of D60s front and rear, next leave them full width so it will be stable and be able to steer those big tires. Rear High pinion 60 is dreaming for guys with pretty deep pockets. Being as they are ALL custom built, (none exist in any stock application).

Reality check, Jim, get off the NB bullshi* no one needs to have that brought up out of the blue, if the mod is paying attention those posts should be being deleted.

In CA no part off taking the OE carb off is legal. So for now shhhh....and hope you don't get popped at a road side emission inspection. Or save up your dimes for a 50 state legal TBI system. Besides It'll run much better.

Unless you are a mechanicle wiz, plan on the jeep being down for more than a weekend to do major axle swaps. Even one end at a time. Are you a welder or know one with a 220 unit? Plan on that too.

Wrecking yard axles for $150 are just that, none are safe to just bolt in, so having the skills yourself to rebuild and build up the axles you find are on you, or, paying someone (like me) to build them for you.

Next is deciding how built to go and what trails you plan on running? Name a few and we be able to help to decide what axles and lockers to use.

Lunchbox lockers are junk in 98% of cases Aussies are built better than most, but that ain't saying a bunch.
Powertrax makes a nice quiet running locker, BUT, the darn thing costs almost what a detroit locker does. So, why?

Next, no matter how you build it, breakage will happen, so this brings me to doing it slowly as opposed to or(in your case)slowly aquiring lots of parts having axles built over the next 5-10 years then taking the rig out of commision for a month or 6 and build it right one time with all the best affordable stuff....Doing the latter, makes it so you never go jeeping, only spending money and dreaming.

If you build it slowly and learn as you go where you can save a buck and where you simply must chunk some money down. Lockers is no place to go cheapo. DIY gear work is another.
Your stock dana 30 front axle with a little help can handle 35" tires as long as you are not a throttle jockey.
Heck, Fred is still running a d30 with 38" tires.

So this brings us to the rear axle, the POS M35, get rid of that first, an 8.8 is good but never a drum brake one ICK.
Only disc brakes with an 8.8.
Also a d44 is a great choice, but not one from a waggy, rather one from an xj or yj or even an mj.
The yj one is the only one that bolts up. the others both need spring perch reloaction/replacment. These axles keep the OE 5 on 4.5 wheel pattern. Leave it as an open diff for a while, no locker, now....

Go wheeling.

SD