GM Full Size and Mid-Size Chevelle, Monte Carlo, Cutlass Grand Prix, Regal, Skylark:
• BIL AK1044 Rear 254/141-Linear 20.31" Extended - 13.11" Collapsed
• BIL AK2040COB Rear 70/140-Digressive 20.31" Extended - 13.11" Collapsed
• BIL AK3030R Rear 158/117-Digressive 20.31" Extended - 13.11" Collapsed
• BIL AK5030 Rear 300/120-Digressive 20.31" Extended - 13.11" Collapsed
• BIL AK6010COB Rear 185/70-Digressive 20.31" Extended - 13.11" Collapsed
Mustang:
• BIL AK1198 Rear 152/103-Linear 20.16" Extended - 12.64" Collapsed
AK1051 is a softer shock than AK1043
AK1199 is a strut style shock
**Street Stock Shocks are rated at 20.62" Per second**