I have "Ranger" and TC wheels in my basement, and that offset-based stickout estimate might even be a little low.
B23 wheels also spec a 12mm offset, and I'm measuring 3⅝" stickout. 1st-gen TC steelies I'm measuring 1⅜" stickout, so that's a 2¼" actual increase.
No direct answer on bearings, but since I have one sitting on my bench, I can also tell you the rear spindle dia. is 1.45", if you want to cross-shop bearings with that number.