I have a lucas tailight I was thinking about mounting on the bubble but it is not my optimum choice.
Please dont do that to that pretty seat.
I personally cant stand when people ruin perfectly good seats with huge tail lights (my opinion)..
The lights u speak of are actually considered marker lights.
They are available for about $40 outta the Drag Specialties catalogue.
They come with an amber and red lens, and have the 1157 bulb included.
After tons of looking around they seem to be the smallest housing available with a full sized
1157 dual fillament bulb (thus why I like them so much)...