I also have a 19 sl and picking up the 21 this week just need to sign the papers and trailer it back due to weather where I am. Glad you told it was a charge port between the 2 seats . The dealer told me it was to plug in heated jackets etc. I think they should have put on the older ones where the battery is in a worse location. I also set the alarm off. Unfortunately due to salt on the road I won't be able to use mine for another month. So any more up dates and differents you find let me know. Is the motor better then the gm motor. More hp but less tork is it faster off the line or slower