or Axletech 4000s...
If you dont mind, what did you pay for the Super60?
Got a set of axles... the Super60 and a Sterling 10.5. Complete, end to end with a tie rod and drag link for 1000... IDK, dumped about 8k into them (RCV, Detroit, high steer knuckles and arms, new BJs, cover, truss, gears, brakes, etc.). Slightly more than a bolt on front, but I also get a rear full floater in the deal (with detroit, cover, 300M shafts, truss, brakes) and plenty of upgrades front and rear not included in those bolt on axles (bigger brakes, larger shafts, 1550 joints, thicker tubes, bigger Cs and knuckles, larger UBs, etc.). And.... a junk yard full of replacements.
It could be done much cheaper. RCVs are a luxury... the stock shafts looked pretty beef and they will be my spares. They could have been utilized shaving about 3000. Options for the center section are limitless and could cost much less. Hell... weld the spiders for a free "locker," saving about 1200. Trusses may or may not be a requirement for your style wheeling and link setup. That would save 400. So really... it can be done for MUCH less. Depends on you really and what you want to do. A lot of these trucks came with limited slip and soon... the junk yards will have the later trucks with the locker too.
I went full custom on my brackets... so that cost is irrelevant to this discussion, but my understanding is that companies sell stock coil bracket kits for around 600.
Building a set of axles isn't cheap nor easy, as some seem to portray. It's not rocket science either... but you gotta be a hack like me if you want to play this game.... Sawzalls at the ready. lol It is much less expensive than the bolt on route and much more rewarding to do it yourself. Plus... in the end... I know what I got and intimate with how it goes together. When things break, I'll be in a better position to fix.