I followed power ram's excellent guide and pics. Much like Bent though i found that 5/8" an inch was nowhere NEAR enough metal. when it was all said i removed more like 1 1/8"++ which i suspect is because i have a 2015 1500 (big horn) and there may have been some small changes to the hardware. for example, my hook had a long smooth taper whereas the photos above showed his coming to a blunt end. no big deal it all worked great, and i was careful to measure with the seat in place before taking off too much metal. Also, side note in case some else is dumb like me. there is a connector for each seat. unplug it. super helpful.
this is a great easy mod, and makes it way easier to do a bunch of crap i need to do (one of my vents leaks, the window seal got folder over in a hurricane and i can't get it fixed with the seat, need to run some cables, yada yada)
check out the pics:
don't forget this connector.
plug end of connector.
first i removed 5/8" waaaay not enough.
after i removed the actual amount of metal needed (something around 1-1/8")
you can see here that i removed past the end of the little bracket about the amount shown.