Help me find parts to mount highway pegs please

[pekingduck]

Looking at the bars, there's a lot of area to clamp a peg on to, both horizontal and vertical. The farther away from the bar, the greater the chance that the peg will rotate when you really put pressure on it.

Those floorboards look like they have a fair amount of adjustability. Do you need to have them outboard of the crash bars, or forward, above the lower bar? then you could use the clamps you wanted, eliminate the bracket that comes with the pegs, and mount them on top without any worry of spinning them.