That's interesting. Maybe it's just me, but it seems odd that notching the subframe would cause the diff to fail. I mean, the axles are mounted into the diff and then onto the shock/strut assembly. The axles have cv joints in them causing them to flex, etc. for turning, going over bumps, etc. It doesn't seem that the axle flexing should cause diff to fail. Also, the diff is mounted to the oil pan, not to the subframe. The subframe attaches to the frame at 6 mounting points and the engine mounts to the subframe at two points to the rear of the subframe with motor mounts that are somewhat flexible.
just doesn't seem that the diff which is attached to the oil pan/engine, and the diff has axles attached to it that flex, with just a cut subframe, would flex so much to cause it to fail.
I may be wrong, but just seems a bit odd.
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