Wilwood and the Spindle confusion

I’m glad I found this thread. Had the exact same question. When I was looking a couple months ago it mentioned nothing about the drop spindle and last night before I ordered it all the sudden it does... they list one kit that will fit 140-15465 Wilwood Disc Brakes - Front Brake Kit Part No: 140-15465-DR

But I haven’t seen anyone carry it other then wilwood directly.

Honestly I was looking at the Dr Diff stage 3. Less headache I think...