Help a fella understand Federal PS pump pulleys

Hey guys,
So I went and did something stupid, and I destroyed the pulley on my federal power steering pump for my 1971 Valiant Slant six car. Part number stamped on the pulley is 82668 1980. I measured the pulley at 6.75 inches od and 5/8" shaft od. with a press fit.

I've spent several hours trying to figure out exactly what pulley I need to order and from who, and I can't seem to find the right one. Usually they say something like "Hemi only!", or it's slightly the wrong size like being 7" (too big) or 6 1/4 (too small). What the heck?!?

I found this one Federal Power Steering Pump Pulley And it's too small. It even contradicts itself right in the listing "Federal PS Pulley!" "Doesn't Fit Federal!" WTH?

Then I found this one March Performance - Chrysler Federal Press Fit Power-Steering Single Groove V-Belt Pulley and it's too big.

Then I try googling the part number, and I find lots of "82668" pulleys, but they all have different later numbers (not 1980).

Am I just overthinking this? I just want to pay my money and have a pulley that works correctly. An added bonus would be a non obnoxious looking pulley like that mancini one... but I digress.