If not going on the bars, personally I like behind AND under axle brackets.. they keep everything under the bed, so its a pretty clean install. Just used them on my friend's hardbody, and they even allowed me to use them as 4link tabs for the lower bars also.. kind of a 2in1 deal haha. Definitely a great kit, just like everything else from Suicidedoors. Give them a call, and see whats up!
you will need to have more skill for welding those types on, because there is more stress obviously. but that doesnt mean its a bad idea because of one failed install.
here's a pic of how i did them,