Brian Tooley .660" Lift Platinum Spring Kit Brian Tooley .660" Lift Platinum Spring kit Sk001 With Titanium Retainers For LS1, LS2, LS3 and LSA EnginesTHESE ARE FOR STOCK ROCKERS .660" Lift Platinum Spring Kit SP001/SK001 springs are designed... MSRP: Was: Now: $309.99 Add to Cart