Josh,
You can get official strobes from
http://www.galls.com that's about the only site I know of without searching. Try Froogle.
I'm not sure about what switches I will have, I know they will be rocker though. I went to Pep Boys about 4 days ago and they didn't have crap, if you look on my site you can see the regular toggle switch I have in the coin tray but that will be replaced with a new tray since I will move all my switches between the ash tray and shifter.
One question I have for you guys who did that is: what did you use to put around it? Is it a piece of suede or cloth or something? Since I have painted it, it has tons of scratches from when I throw my digital cam and keys and stuff there.
Actually I may wait until I find out how that "bastard blinder" works for you and put the switch for that where my coin tray one is. Hopefully I will rarely use it.
As far as the air horn I haven't checked out JCW but check this out
http://www.wolo-mfg.com./elec.htm
-Anthony