If the front of the ds gives the ds loop as it is shown will catch it. I'm not 100% sure on what happens if the rear ds ujoint gives. It looks like there's a frame crossmember underneath it and it looks to be just the floor above.Blueday, what if the front u-joint gives up? Or the inside joint on the half shaft? Is this kind of standard placement for the loops? I haven't put mine on yet because I couldn't decide on placement. If placed near the center the bracketry gets more complicated as there isn't anything substantial to attach to..
As for the halfshafts this dragvette link states the loops will minimize damage should either end break loose.
In both the ds and hs cases it looks as though the thought process of the loops i bought from vansteel is to catch the ds/hs end not attached to the rear end. I'm not sure if there is a reason for this or not.
Hopefully someone else can chime in and give some input on this.