I don't think this made it through Topica the first time...so I'll try it again... I'm getting ready to order a Pertronix setup for my Coronet and I was going to get one of their coils @ the same time. Problem is, they list 4 different ones... 0.6 ohm, 1.5 ohm, 2.9 ohm, and 3.0 ohm. Which one is right?? Thanks Bill M 65 Coronet 500 'vert