Magnum EQ Heads, what alternator fits?

@MOPAROFFICIAL, the ignition is the stock ignition that came on the '79 LRE. Only thing that's not stock is an MSD 5300 box.

@JoesEdge, what's the bracket setup you used to run the stock squareback? I cannot seem to see how it would work without a horrible belt misalignment.

@Lelo Dart, thanks for the link, there's some really good info in there. My main issue is also that I have a bracket that shares the one bolt hole that houses an idler pulley where A/C would have been. I'm wondering if my best solution is to remove that bracket and idler pulley and get a shorter belt to just eliminate it.