My Optima redtop is starting to go south again. This battery is 2 years old, and the third Optima product I have had in the truck over 5 yrs. I am thinking of trying one of those light weight drag race batteries. I don't drive the truck much so I can pop it out or put a trickle charger on it when not using. Plus would save weight on the front end. Also has anyone put a battery in the back passenger compartment of the CC? Is it against NHRA/IHRA rules to do so? I was thinking of buying a sealed plastic box and mounting to the floor and a vent to the outside. Though I wont go through all that work if its not legal. So anyone know? Also what brand of racing battery are some running on here?