i looked at the old coil on my 84 318i and it looks different where the high voltage wire from the plugs attaches then on the msd blaster 2 coil i want to install. the blaster coil is just a tube with a screw at the bottom where as my old coil has a nippple where the plug goes on. Help me with this please, i am sure the msd coil will fit, just need to know why it doesnt have that nipple.