whynotfab
+1y
There will be a ride quality difference, and more than likely lift amount too when deciding between on the bars or on/behind the axle.. It's pretty much how you want it to be, what you have room for, etc.. I personally like link setups like Seth's. You can get creative with the top wishbone part of the link, and still mount the bags on/behind the axle, or on the bars..
The behind AND under axle brackets, keep the bags even lower under the bed.. and double as lower link bar mounting tabs if you use the right width ends.
It's really u to you..