We have a front mounted class III receiver on our van. The receiver was provided by SMB CA, and bolts between the frame rails, just behind the bumper mounts.
When we recently obtained an Aluminess front bumper there was no interference.
I much prefer this solution since any load in the receiver places no loads on the bumper or frame horns, and the extra cross-member of the receiver provides a bit more stiffness to the frame of the van.
I believe the receiver was about 200$ at the time, and is compatible with the SMB 4x4 conversion (with the leaf-spring mounts in front which would prevent a standard Draw-tite or Hidden Hitch front receiver from mounting).
There is a photo of our receiver (with the stock bumper in place) on our web-site at
about 2/3 of the way down.
I suppose I can link to it too...