The rearend is a little bit modified Yamaha R6 unit and it is indeed very good to sit on...
I made the seat to suit My own ass, so it's just right for My ass..
The mirrors are from www.louis.de and they come with 3 different bolt distances, don't remember the others, but the installed ones have 40 mm distance from center to center.
i installed the white lenses and orange bubs, but orange lenses and normal blubs come with the package.
Link to the mirrors