Unless you're building a 100% original show truck, do yourself a favor and use a ground cable long enough to reach a bellhousing attaching bolt near the starter, then use smaller gauge ground wires or braided ground straps from the engine to the frame and/or the body and bed. The starter pulls the most current of any of the electrical items, and it needs a very low resistance ground circuit- - - -#0 cable or larger with a minimum of connections to negotiate.
Jerry
