By that I assume you mean that the new one comes with "extra" mounting hardware that you may normally mount on the bike. But this bike already has mounting hardware so it isn';t needed. Right?
Good enough for me. Probably tomorrow I will place my order.
Pork
The windshield will come ready to mount out of the box. Use this box to store the old fairing and shield. The new shield will come with a separate hardware pack that will have the (extra) bolts and bushings for installing on a virgin bike. Since the ConV already has these mounting bolts and bushings in place you don't need the hardware pack. Save this hardware pack in case you sell the windshield down the road. It will make it easier to sell if you ever decide to trade your ConV and put the stock shield back on.
When you get one Porky, be sure you get the right one. By that I mean, either the stock height or the low profile. Again, we have the low profile which has a smoke tint. Goldfar purchased the stock height and it's clear. There is a three inch height difference in the two shields.
58278-95 = low profile smoke tint
58243-95 = standard height clear
The low profile is more expensive than the standard by about 23 bucks.
Be sure to check out a nice windshield bag too. It will fit nicely and add to the new look.
THIS ONE is the one wifey has. Clean lines and large chrome buckle. About 100 bucks retail.