My way of doing it -
polish 3/16" aluminum tubing, polish it, cut a piece 1/2" long
polish 1/8" aluminum tubing, polish it, cut a piece 1/4" long
super glue pieces together with about 1/8" tubing about 1/8" down the 3/16" tubing
these pieces will make the distributor
order ignition wire from Scale Dreams or Model Car Garage
order wire looms from one of the above
epoxy ignition wires into distributor
drill holes in block (I think it's a #69 drill bit)
open telephone wire to expose 4 wires (black, green, red. yellow)
strip colored coating from copper wire
insert telephone coating into holes drilled in block & cut to appropriate length. These will represent spark plug boots
insert ignition wires through wire looms and into the spark plug boots
Done
Other people seem to go from the block back to the distributor but that doesn't make sense to me. Using tthe aluminum tubing is about the same as buying pre-wired distributors but at a fraction of the cost.