I've drilled out stock disrtributors and epoxied the 30 ga. wires in. I used to use CA but like the epoxy better. Rather than spend all that money on pre-wired distributors, I often make my own from aluminum tubing.
I use the insulation from telephone wire - there's 4 wires inside (black, red, green, yellow). From experience, I've discoverdd that the wire from AT&T works the best because it's the right size to accepte the 30 ga. wires.