I have the accel billetproof distrubitor in the coronet R/T and it has worked great.
http://www.northernautoparts.com/ProductModelDetail.cfm?ProductModelId=1449

$260 for the billet distrubitor, internal electronics, magnetic triggered, adjustable mechanical and vacuum advance, stock style cap.

This is an older model, I think the 53000 series distrubitor is the newer version, but it is more expensive. The main change is the 53000 series has the mechanical advance up top so changing the advance is easier.