Short Shaft Fan Clutch
Just a quick update. Looks like Hayden started putting these into production. I just got an email from them saying"
"Hayden is pleased to announce the release of the low profile Hayden fan clutch 2947 for classic cars with space limitations. Please see attached flyer for details. Said clutch is available at SummitRacing here."
I checked the specs and it looks like they've increased the OD of the water pump mount as well so the bolts won't over-hang. Looks like Rock Auto has them for $51.75 for those interested.