There are four mounting holes on each side of the Easy Brackets. You can drill the holes and mount the bags in any position up/down or forward/backward. I have Easy Brackets on two very different bikes and with the addition of two holes per bag, I can mount the same bags on either bike.
If your bags are soft material, they may sag a tad inward at the bottom. You could add some .050 aluminum plate to the inside of each bag as I did to prevent this.
Great product,
1olbull