Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
I've got a Cibie Z beam in my 500 Ted, along with a good LED bulb, the beam pattern is as good as identical with the halogen, so if the present reflector is ok try a decent LED bulb first. There is a thread about it on the site with pics. http://www.sohc.co.uk/index.php/topic,25595.msg234557.html#msg234557