Nakkaa PAC-1218 Drop-In Beehive Valve Spring Kit 600" Lift Rated Uniform Pressure High Strength Valve Springs Compatible with LS1 LS2 LS3 LS6 LQ4 LQ9 4.8L 5.3L 5.7L 6.0L 6.2L Engine PAC-1218-16. Simple direct installation with no extra cutting or refitting.
