Most starting problems are the result of poor wiring and over 50% of cars are poorly wired. That big 00 starter cable does you ZERO good, if your ground cable is a 4 gauge cable, with a bolt run through an eyelet somewhere in the trunk. The cable is too small, the starter is NOT in the trunk and your chassis is one of the WORST conductors there is. The most bad azz starter in the world and a diesel truck battery won't fix that. The ground side MUST be as good as the hot side........few are