i did this on my 68'dodge 440/727, i got a new dist off ebay, from skipwhite performance, about 50.00 and also switched to a e-coil about 30.00 , for under 100.00 i switched over, very easy switch,
drop in dist, 2 wires, red , hot to coil, black ground to coil, then
12v wire to hot on coil , no ballest or ign. box,

runs great, i also wired up the alternator wire to the starter relay,
Madelectric.com amp gauge bypass.

car cranks easier, runs about 13.5 volts