Just for info.
My lumination kit failed on my 25D Dizzy so thought Id try one of these hall systems and I have to say it was a breeze to fit and worked first time.
Here's a link to what I bought, seller was a bit slow and no comms but it did arrive, car runs very smooth now
Price has gone up a bit since I bought it £19+p&p now £23 outstanding value and no ignition amps or anything like that.
I now see that they have full dizzys for £50ish bucks pretty good deal
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=220645202809&ssPageName=STRK:MEWNX:IT