Thanks for getting back to me.
I hadn't realized that double belts would reduce side loading--is it because you need less belt tension?
I emailed a W'beke supplier about pulleys but never heard back.
I'm in upstate New York. Where did you order your pulleys from?
I'm looking at a kit Balmar sells--a small-frame 100amp 6-series alternator plus one of their smart chargers and some ansillary stuff.
The prior owner sprung for a 375A Rolls battery bank but didn't really do much with the charging system other than a 105 amp Delco internally regulated automotive charger, which I don't really trust. So I'm more or less building the system around the batteries.
I'd be curious to know what W'beke gets for the engine and water pump pulleys.
Merry Christmas to you and yours, too.