I seriously wonder about these "Tail Gunners"
So they have the guts of them spinning, if the spinning bit doesn't spin on bearings they won't last five minutes.
If they do have bearings to spin on are they sealed bearings ? and just how long would any type of bearing last being in a blast furnace all its (Very short I would imagine) life.
WELCOME to ya, from WA State!
If you like the look, don't mind the cost and don't care about improving performance, put whatever the heck you want on your R3R!
Whatever floats your boat!
BTW - they'd look great with a CT on the rear!