On the front driveshaft, you'll need the double-cardan flange that mates to the stock H3's t-case flange. Its nothing exotic but, there is only one company that makes it...(I think I got a couple of them lying around). The rest of the front driveshaft can be ordinary full-size stuff. I run standard u-joints on my rear driveshaft, with a stock slip yoke. Depending on the travel...you might have to run a cardan on the rear shaft as well (I think Bebe runs this). As of right now...I'm not aware of anybody that makes a SYE kit for the rear output, so we're all stuck with the slip yoke.
I got front ABS rings that work. You'll have to do some machining to install them on your D60 hubs, and you'll need to mount your stock sensors somewhere on the knuckles to read them...but, I'm sure it can be done. On the rear ABS...you got two choices. You can adapt some stock rear H3 rings (they look more like sleeves than rings)...these will sit inside the tubes much like they do on a stock H3 rear axle. OR...you might be able to mount the same front rings to the rear brake rotors or hubs somehow. I'm not familiar with the Sterling but it can probably be done. Depending on what it came from...you might be able to simply re-use the ABS rings that are already on it. I do know that you must have separate RH and LH rings for the H3 to operate correctly....so any type of single sensor on the diff won't work. More & more trucks are going to the four-sensor layout...so its possible that if the rear axle is newer than 2010 or so...it might be a plug & play.
I have no idea what sort of issues you will have by simply abandoning the ABS. On older GM stuff...you're problems were limited to just "putting up with the dash-light". But on the newer generation systems with integrated TCS and Stabilitrac...you're probably opening up a barrel of monkeys. 07custom has been driving around for years with his ABS missing....he would be the guy to talk to.