Bone stock down to the manifolds and dual point distributor. 68 383 dart just curious what the initial timing should be. Thinking old specs was 0 degrees before tdc..that sound correct.
An old motors manual shows TDC for a standard shift car ; shows 5* BTDC for an automatic car.
It is a 10:1 for 4 BBL motors so premium is required. The points nuts require a 64th's ignition wrench on some brands. Polish the dist. cam with 600 grit. And use dist. cam lube. Carefully set the point gap. A drop of oil under the rotor. Check/oil centrifugal weights. It is a quality distributor.