Push button ignition switch help to wire

1973 Plymouth duster 400 big block. Have been trying to make sense of the wiring in our /6 to big block swapped duster. Been using the fsm here on the forum, factory manuals, our parts car reference. And after days of efforts came to finally look under the dash at the fuse block and the hacked in rats nest to see that the fuse block is a lost cause full of rust to where the fuses are becoming one with the unit. Wires cut and hacked. The car is a 4:10 8.75, big block, Mallory unilite,12 point rollcage, ratchet shift car. Came to realize that it's more a drag car than resto. I want to just go with a toggle switch and push button ignition. How should I wire it all with keeping the ballast resistor, neutral safety switch, etc. I would love to keep the turn signals, headlights, running and tailights. But can add that at some point. Any thoughts or suggestions? Thanks.