Think  about this !Try a remote mount fire extingusher at the  passenger
seat with a 5 lbs co2 type or purple k or a tri chem like an a b c type.
Mount it with a switch tha t when  you  throw it it will empty out into the
engine bay. Now the dry chemical ones will leave a residue that  you  will
have to  clean up .But  the  co2 typ will  not .
But  if you want  to spend the  big bucks get  yourself an haliotronic  type
. route an metal tube from the  extingusher to the engine bay with
nozzels.Think about what you  want.
Darrel