So, I received this late last week. And it seems I made a miscalculation, because this thing doesn't fit the X-QPack 🙁. *sob* Silverstone made it 3mm too tall to fit through the motherboard tray cutout and under the HDD support bracket (and that's without the fan). This thing apparently fits the Sugo without issue though 😕. So much for being a low profile cooler.
I ended up having to do the popular QPack/Microfly bracket mod (cutting off half the support beam) to the case. On the plus side, I can now fit the cooler with my Scythe Ultra-Kaze Low (120mm x 38mm) on top without issue. And the HDD bracket still holds 2 drives without sagging.
Well worth the effort for the decreased noise and improved cooling. Thanks OP!
Side note - the stock fan is a jet turbine at anything other than lowest speed...