There is one difference but not so far as what you order from Kuryakyn or wherever.
The amber bulbs you get with the bezels are (and I forget) either single filament or dual filament. The bulbs in your rear lollipops are single filaments (turn signals only), whereas the front lollipops are dual filaments (running lights & turn signals).
You will have to buy the "other" type of amber bulb once you get the bezels from your local auto parts store.