Update you F1 with a 9" Ford rear end or replace your F100 rear end. This a from a 1966 F-100.
1- Axle housing- 57" from housing flang to flange, 40.5" center to center spring perches.
1- 2.50:1 third member (open)
1- 3.00:1 third member (open)
2- axles with new bearings installed (28 spline)...
My name is Toby Peterik from Racine, WI. I have had my 1950 Ford Business Coupe since 1978 and my 1951 F1 since 1990. You're never to young or old to learn from good people that I have found sites like the Ford Barn and I hope to keep learning from this site. See attached pics of my F1 and Coupe.