318 timing mark
You can use the parts you have on there now.......whatever they are. Find TDC. Pick an appropriate spot where you can SEE both the balancer AND the timing cover.......or WHATEVER reference you want to choose on the engine and mark it. You can mark it ANYWHERE on the balancer and engine you want. It does not matter where. As long as the corresponding mark on the balancer and wherever you choose on the engine line up at TDC, you are fine.