Good question! I hope that Blue Ox or some other will come up with one.
I did run into that problem with the MG, but that was hardly surprising. Not a lot of MGs on the streets any more! As a result, after studying how these things are attached to the vehicle frame, I designed my own with measuring tape, sharp scissors, cardboard and duck tape, then took it to a welding shop for actual build. Ordered four big, hardened-steel bolts to attach it to the frame. It's probably studier than the one that I bought for the Honda.
