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Showing how the sausage is being made, a little at a time:

I have been researching the '715 for two years now. So I have a good feel for what could be improved ; this is the wish list I compiled from M715 owners: The Tornado engine is interesting....but a diesel would be the cat's meow, CAT 3116 The D60 front is obsolete and has D44-like knuckles...

Upside down, but does not rotate the opposite way? Ring gear not on the other side? The new axle lengths I need will be 51.375" & 40.750 ". The intermediates are 49" & 44 ".

Pulled the rear 3rd member to verify that it can go in upside down.

So a good friend, Paul, says to me: " Since you are removing the cab and re-plumbing everything, why not put a shorter cab on there. Then you can roll with us ( he means the Jeep guys) to Charleau Gap and other places you can't get a ten foot high truck into." Well now.....

Removed the airlift structure. Dang, that thing weighs 300 lbs if it weighs an ounce !! https://www.youtube.com/shorts/a1PqWaIQZqE

Took stuff apart.

Driveshaft angles change as the diffs are not centered and are biased toward the driver side. But then, that's what U- joints are for :)

The LMTV is paid for, its all labor cutting bolts/drill holes, the only expense I see is running new air/power steering/fuel line which I was doing anyway. :) All the air over hydraulic goes away as I deleted the kneeling capability, the spare tire deployment mechanism, the air bags go away, and...

You guys are getting warm....The weight of the cab on top of the engine on top of the axle = front heavy. The cab on the rear distributes the weight, eliminates heat load into the cab from the engine making it practical to air condition, dispenses with the cab tilt mechanisms, diminishes engine...

Actually, Coachgeo, I will be using advice you gave to me back when I removed the bed, and I was lamenting how front heavy the truck is: "Put an engine block over the rear axle, that will help"......Stand by, like I say, I prefer to show results before saying too much. Haters ya know.....

I have seen the counter-steer setup on the 5-axle rigs, a straighforward implementation.

Not exactly. I am, however, taking advantage of the chassis frame rails being the same dimension front to back. In principle, any of the suspended components can go anywhere along its length . The guys making deuce and 5-ton bobbers do it all the time. I prefer to show what I have done rather...

Yes, will do. I am anxious to fire up the new magnetic drill motor with the core drills. The key will be go slow + steady flow of cutting fluid.

Setting up for shortening the wheelbase on the m1078:

Moving stuff around. https://www.youtube.com/shorts/nZasNIaxsaI

https://youtube.com/shorts/t2NCBcAvRSQ?feature=share

https://www.youtube.com/shorts/B_5fUkVxFzg

Trail, yes, it limits the size of obstacles that I can reverse over in tight maneuvers where I have to do, like, 17-point turns :)

No, it is the structure mounted to the rear of the truck that , in the event of a rearend collision, the striking vehicle does not go under the rear wheels.