Originally Posted by mainecobra

Nice car by the way mine is red as well!! That is not completely true people have broke a spring with 20k and 145k no rhyme or reason for it. All I know is if there is a 5% chance I could break a spring I'm not taking that risk. Your probably right the chances of breaking a spring are damn slim but I'm not risking my motor for a fairly cheap preventative maintainence job. I ordered lac 1218 and comp trunion rocker upgrade kit. After that I'll have zero worries and a very solid setup. A z06 is the type of car that's worth putti some money into for the safety factor.