Actually, all these mods are old hotrodding tips- underdrive pullys, alternator cutout, driveshaft alternator (saw it in Hotrod magazine back in the early 80's- essentially youre spending less energy turning since youre using the drive ratio of your tranny to your advantage.
I think the "less-is-more" move here would be to go with a lighter battery (Get a BCI book...what percentage of your laden weight is that group 24?), turn the alternator slower since it would extract less power off the line in traffic, which is a reality in the big city, and use the alternator cutout.
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