Who sells the deepest bolt in C- notch?

[stomper]

I purchased CPP's notch on eBay (see pic). It only moves the axle up 1-1/4". Almost doesn't seem worth the trouble. From looking at pix of other manufacturers it appears there are some deeper ones. I have searched threads and manufacturers descriptions but definitive measurements are hard to pin down. Anyone have some hard numbers on other options? Also, access to the top of the frame is impossible so bolts have to be on the side and bottom.

Making something custom is not an option for me. Paying someone to make one would be too expensive. I'm not too concerned about compromising the strength of the frame, or reduced hauling / towing capacity so save your keystrokes.