If I remember correctly I pulled the lamanet off and replaced it with one from a OMC on my Firestone. Fairly simple to do. I had 2 evinrude coils brand new and pulled the ones off and put the new ones on and BOOM. Im almost sure it was the firestone but I could be wrong. I restored so many I try to remember
My 1954 had the orange shellac-coated coils. Does yours? If so, are you sure you need one? Those things will last forever if the rats and roaches don't eat them.