That's the problem I face. I've never tackled such a project. I can't weld worth a snot either. Dad is certified to repair boiler tubes. I guess if his welds can withstand high pressure steam they would work for axle tabs. I don't know if he would help me with the swap though.
They are proper side drop, drivers side. My buddy was eyeing them for his YJ, but decided he didn't want to spend any money on it.
A bolt in would be nice, but the cost isn't so kind.
Yes, the bolt in ones are pricey but a swap not specifically designed for a TJ can be as well.
You'll need brackets for the new axles, gears (if you want to regear), a locker (if you want that), time and a welder (plus some other tools) and also any brake parts or other hardware that may need replacing because the axles are old and it depends how well they've been maintained.
I am also not sure how much wider those axles are than a TJ's. Something to consider if that matters to you.
You'll also need new wheels if it's a different bolt pattern unless you can find wheel adapters or something.
If it's a 79 Ford D44 then it's high pinion, has heavy duty 1/2" wall tubes, and 8 lug hubs... you can swap 5 lug hubs onto it from another Ford if you want 5 on 5.5" or something.
The rear D60 will require work... nobody wants them for a reason. You will NOT get 35 spline axles into them without taking the entire housing to a machine shop and having the spindles bored out to about 1.65" or so... there isn't enough clearance for 1.5" diameter axle shafts to pass through the spindles. Until then you're stuck with 30 spline(yeah.. D44 axle shaft size) and D60 clearance.
IMO they're great axles for a smaller TJ... like 37s to MAYBE 38s or less... but once you go that big you'll be like "dang... why didn't I just get a D60 front and a 14 bolt rear and I'd be good for 40s-42s."
FWIW I just bought my axles out of the blue and learned how to weld a couple months before I started my 1 ton swap... you can make them work if you put in the time to learn
For that price I'd buy them and just sit on them for a little while until you figure out what you want to do... worst case scenario you can turn around and resell them in the future. Clean them up nice and you can get a little more $ for them.