About 25 years ago I replaced the original front coils with new 600lb coils. The old ones were sagging and the car was 2-3 inches lower on the drivers side. When I replaced them it leveled out the car and raised the front end a little bit. No complaints. Now as i am going through the car again, recent engine rebuild, new leaf springs and other needed items I again notice the drivers side of the car is lower than the passenger side by about 2 - 3 inches. Could the 25 year old springs be weak again? I don't drive it alot, maybe put 2000 to 3000 miles on it in that time. Any ideas? So if I do replace the springs do I put the performance coils on that West Coast offers (600 lb) with the one inch drop and the polyurethane ends? Do I go back to stock? Should I use the rubber instead of poly? Any help is appreciated. Thanks!