Water pump pulley

My stock 67 dart 273 non ac has about
6 for the crank and 6.25 for the wp, slightly underdriven. No shroud, 7 blade fixed fan, cools fine .
No shroud! Wow Man! I drove mine daily in traffic for a few years, even in the Summer here. Always run a shroud here! Lol. That said, I'd Never daily drive my Duster now, unless it's 10 miles each way or less. SO MANY people have moved here in the last year or so, it's gotten crazy. And the majority cain't drive no how... I'll grab a tape and report back. Just so it's on file. I know that isn't the OP's need, but maybe it'll help someone else.... I have Learned So Much just "Thread Diggin"... lol