Throwing my hands up on this ignition!
Ok taking pishta's suggestions I did bit of checking. The coil read 1.4 ohms across the post and 9.8k ohms internally. Interesting the coil I changed out (an Accel) had the same readings. With the ignition on I read 12v across the coil and as 12v to the source to the Summit box. This tell anyone anything?