I searched the posts and didn't see much on this subject. I know MT car products /Boling Brothers make this conversion kit with all the hardware. But I talked to them and they said yes it fits, but you need a 5/8" spacer behind the drum for the correct brake backspacing. They also said if you don't want to do that, you would have to get custom axles made with the 3-1/8" backspacing required for their kit. The larger bearing 9" ford has 2.5" backspace. This seems very odd since they have made a custom backing plate to fit the 9" ford, why didn't they make it deep enough for the right backspacing. Have any of you made this conversion and what was your solution for the backspacing issue?