Here is a nicely detailed 9" Ford OEM-style rear.
This version is the stock width (2-1/4") and there is a narrowed width Ford 9" found here.
This rear is also available with an included brake set and in either in black or white.
See Futurattraction's 4-Link set made for this rear end.
Resin parts, by Futurattraction, 1/25 scale.