My son bought a Optima Red Top 75 [the base model?] battery rated at I think 900 amps about four years ago for his Turbo Supra. He has had zero problems with his starting and charging systems in that time and his engine has been mortified to about 430 hp. Several advantages of the Optima besides being heat and vibration resistant; are the cells are individual so if one burns out it supposedly that will not effect the others I believe its called a Spiralcell battery. Supposedly it will last twice as long as any other battery. But they are not cheap at approximately $120.00 + depending on the model.