1968 Dodge D200 with a 318 from who knows where

I went back and looked at the number stamped on the block below the head on the drivers side, P M 318R 2502 0444. Other than the P at the beginning, which could be a mistake, that number means that this engine is the 444th engine built (finished) on or around 8th of December. So it's possible that it could be considered a late 68 and therefore the 69 only timing cover may make sense.
For now, I'm going to use the "hub" that is the harmonic balancer and like I said earlier, I'll use the timing to get it started and warmed up and then use vacuum gauge to do the final setting.