5.9 Magnum into a 73Duster

All production 360s are externally-balanced. The old 360 were 19 in-oz out of balance while the 360 Magnum is 14 in-oz out of balance. Got this info from the instruction sheet that came in the P5249843 kit from Mopar. I scare myself when I read them first. :read2: Which now looks like I don't need.
Since I running the EFI I stuck with the factory tone ring/flex plate. Tranniedoc in the trans section stated that the newer mopar converters have the bolt pads 90 degs apart now,no more offset.
Lining up the crank bolt holes with the Magnum and LA flex plates laying on each other. the weight on the Magnum lines up in the same position on the converter. We'll file the hole out some time this week.
Thanks for all the help.