Another old f**t here & new member who bought an 06 Coupe late this fall . Went thru the forum here & did the DIY things recommended . The one item that seems to give the batt a little more pizazz in starting was adding a cable from neg batt to the bell housing . Also removed the existing corroded ground strap , soaked it in mix of muriatic acid & water till sparkling clean , dried it , gobbed it w/ grease , covered all but the ends w/ heat shrink , then reinstalled it .
Note , muriatic is very caustic , wear rubber gloves & don't inhale it ! Also modified my current car ramps w/ some removable 2x6 extensions to accept the CF . Just purchased a SRT6 which is still w/ the seller as he installs a headliner (part of the deal) & then will go thru that doing as I did on the 06 .
For this old motor head/hot rodder , these cars are beautiful little hidden gems !