Hubcentric wheels. Don't grind the hubs down, that's beyond ghetto and dangerous. Don't hog out the bores with a drill. Take the wheels to a machine shop to get them bored out. Titans are 100mm, ours are 108mm. Just few bucks and minutes at the machine shop and the ride quality will be smooth and you won't be forever chasing weird shakes and vibrations if you Dremeled it.

Titan steelies are awesome and you have a nice truck. Do it right, do it safe.