I did some web snooping and found this ad for a Saginaw 3 speed overdrive in the Tri Five Marketplace ads.

You'll have to join up to be able to contact the seller as I couldn't find any direct contact info in the ad. frown

Preliminary search of FB Marketplace done, but only scratched the surface on that look. Will try to see if I can locate anything else with a deeper look. wink

Best of luck with your search! thumbs_up

~ Dan
1951 Chevy 3 window 3100
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"My Grandpa Carl's Truck and How it Became Mine"
1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver)
US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)