Originally Posted by raymond

Forget what MSD tech tells you, they do not know the specs of your rotor, as I said, Lonni Lenarduzzi told me of many Ferraris and Porsche with burnt rotor and cap when they used MSD-Units and a too strong coil.
Even on my Porsche 944 Turbo Cup I had a burnt rotor after I used a new coil which is the official replacement of Bosch for that model.

To go into theory, modern coil which are used in the Diablos, Murcis and Gallardos produce about 35Kv and 60-70mJ engery.
The MSD 7 produces 48KV with 115MJ, do you really think it's necessary to pump 2 Amps through your old style distributor cap and rotor.
Absolut nonsense, I tried a 300mA coil as well as the 1,1Amps, no difference in performance, but your plugs, rotor and cap will be burnt away with that current...
Since it's so easy and cheap to get new caps and rotors just go on with your hot coil, but remember MSD refers to racing not to street application with 20 year old ignition technology.