measure the width of the stock brackets, mimic that on the new axle. you want at least 8" of vertical separation of the brackets.

and yea, that axle is junk. i wouldnt use the 9.75 either.

Why wouldn't you use them?

As already mentioned, the front axle has cast wedges, and there's practically no aftermarket support for the rear. Scrap them, put the money to better axles. It's not like late 70s f series pickups were some rare unobtainable truck.

I have found quite a few places that sell after market items for the 9.75. I think I'm going to hold onto these and build them just because. Free is free.

You can get lockers and alloy shafts for the 9.75 so I don't see a problem with using it. Stock the 9.75 is stronger than a Dana 60 except in load carrying and then only by a few hundred pounds.

I wouldn't say it's stronger.. It's a 9.25 btw idk why i didn't notice that earlier. And you're limited to 456 gears, prob the worst part about it.

It is stronger, it will hold more max torque than a Dana 60 because it uses 1050 steel for the shafts instead of 1040, plus the pinion is larger, the only reason that the 60 will carry more weight is that although the Ford 9.75s tubes are a larger diameter they are HREW tube where the 60s tubes are DOM.
Also Randy's has 5.13 gears for the Ford 9.75.
So that sounds like a pretty decent axle, especially for free.

Oh ford. My bad. I guess use it, it was free. I like my d60-isu rear..

That ISU-60 must be very rare. I've heard of the ISU-44s and a custom 12 bolt D/60 hybrid front axle but I've never seen or heard of a ISU-60 rear axle.

When you say stronger are you talking about a semi float cause no way it's stronger than a full float 60.

Not really. It's under every late 80s to early 2000s e series vans. E250 got semi float, e350 full float.

I have checked out a couple of other people's builds where they used the D44 and made their own long arm set up. It may not seem the best idea but I'm intrigued and I want to give Fab'ing my own suspension a shot.

its pretty easy. looking back i wish i did it. i bought a kit thinking i would be able to finish faster, but other things got in the way and it took longer than expected.

The Ford 9.75 will handle more torque than a Dana 60 sf or ff. It will not carry as much weight.

Ford 9.75 Coninuous output torque = 1600 lb-ft
Maximum output torque = 6100 lb-ft

Dana 60 sf COT = 1500 lb-ft, MOT = 5500 lb-ft
Dana 60 ff COT = 1500 lb-ft, Mot = 6000 lb-ft

These are the numbers, like I've stated the 9.75 is a good axle to use for wheeling the Dana 60 is a better axle if your are carrying a lot of weight.
If you retubed the 9.75 with DOM tubing it would carry more weight than the Dana 60 sf, but carrying a lot of weight isn't needed for wheeling in most cases.

Whats the ground clearance difference? 100 ft-lb difference is nothing to boast about