Used self tapping screws to hold mounting bracket on roof crossmember. Tight as can be, no wiggle. Can't see it while driving but don't really need to. Couldn't be oriented quite right because of bracket size. Gotta drop headliner. no prob for a beginner like me. Punch bracket through headliner to hide bracket for nice clean install. Don't worry about that part, it's easy to figure out. I've done this on my last two trucks w/o any troubles. Remote speaker is more than worth the $10 or whatever they are. My '01 had a double roof, whereas '04. 5 is single thickness, don't put screw in roof itself!!! :--) Maybe reg. cabs are different.
BigBob's unit wasn't available when I did mine and I'm not sure if he's got the ones for the man. yet. Otherwise I may have tried that.