Posted by Mitch on September 16, 1998 at 15:21:13:
In Reply to: M-37 Spark Plugs for the Underwater Ignition? posted by Bert Wilson on September 16, 1998 at 08:28:36:
Someone posted this to the M37 Page. Champion XMJ-14 or Autolite AR5S/2243. Price ranges fromm 6.20 to 7.75 at Car Quest.