Almost everything else is different. The unit is improved because after this installation it will only be a matter of plugging in a new box to change the next one (in 11 more years). Every connection has been converted to a plug-in connection. That means all the pigtails are cut and terminated at the correct length.
I have not completed the ground connection checking and cleaning, so I have not powered up the new MSD (I’m scared to try it!).
I had the new M/T slicks mounted and they are on the car. Cleaned and polished the wheels when they were off the car. The new tires were balanced. They took a lot of weight!