I replaced the battery in my 97 Supra with an Odyssey PC680. I have had the battery in for about 4 days (including a weekend on the roadcourse) and everything seems to be working fine. The stock battery weighed 37 pounds (less than most people have quoted). The Odyssey weighed 15 pounds. This allowed me to remove 22 pounds off the nose of the car. This and my SP63 kit have helped me remove about 67 pounds off the front of my Supra.