Anyone know if a NOS remanufactured distributor is a bolt on

[ScubaChief60]

Thanks again to all... and the distributor and coil are on there way to Charlie as of today. Spoke to Charlie on the phone twice and I am very impressed with his knowledge and how polite he is. Can't wait to get the unit back and get it mounted onto my engine.

One more ? is does it matter how the unit mounts to the engine? I have been told that the key mates it up perfectly and so spin it 180 degrees and it still mounts up fine. Thoughts on this subject appreciated.