Which ignition?

I'm trying to decide between MSD 6A or getting a basic Mopar Performance electronic ignition kit with an ECU and ballast resistor. Is the MSD 6A worth the extra bucks? Does anyone offer a kit w/ a Mopar distributor and the MSD red box? (Mopar black box is fine too)

I'm staying away from HEI conversions so please don't fill me in on them. This is for an iron head 413 w/ 9 to 1 compression and a purple shaft .509 cam. I'll be buying new, so if you know of a sale, that too would be welcome information. Thanks guys.

Sean