The system that I'm putting on my Duster is top of the line Holley stuff. I'm not sure what the total cost is, maybe around $5000. But you don't need a distributor, crank trigger, carb, ignition box, coil, racepak, gauges, etc. So if you are starting from scratch it is about a wash.

Plus it is a cleaner install. Getting rid of all of the gauges, and misc ignition stuff like start retard, two step, high speed retard, etc. is a benefit to me.