this subject comes up perennially, check the archives for all the same
suggestions as will, no doubt, be made this time around :-)

I got a halon unit to replace a CO2 unit I emptied into the burning
fibreglass firewall of a hot rod on side of hwy (did the job). If you
want to see a picture of the halon unit check this page on my website:

http://www.members.shaw.ca/albell/mods7.html

Alistair

'82 westy, diesel converted to gas in '94
http://www.members.shaw.ca/albell/