Have you checked with Galls?
They seems to have the Dashlaser M in stock.
I do not know if they have everything you look for but the light is cheaper than from the supplier you tried to order from.
It is in fast speed but it is easy to reduce the Voltage to the motor to lower the speed if you prefer that.
So the order from VSS ended up being a total bust. not to mention a month's wait to even get the order cancelled! what a nightmare!
the light wasn't in stock, they couldn't find one. the stickers as well. i wouldn't recommend ordering through there any more.
i did get from ebay a firebeam with the mirror, in blue and amber. it came with the mounting plate with suction cups for the windshield. i got the light in pretty rough shape, but not to worry.
a little lexan restorer for the three lenses, new suction cups for the bracket, and some mirror vinyl for the multi flash mirror, all from amazon, and she is good as new and in active service now.
i took the amber half lens off and put the blue half lens to the rear of the light, rather than the front. This makes the main flash white, with 4 blue flashes to the front, instead of 4 white flashes. a really neat side effect of this is having a big white pop at the intersection angles.