Model A sping ?

I need to know the distance center to center between the rear spring perches on a Model a. If anyone has that information. Thanks in advance.

 

I've got one right here. Looks like 49".

 

A model rear in the shop looks to be 49 3/4 if that helps..

 

That seems pretty wide, but it must be right. I was thinking around 47 1/2" but can't remember where I wrote it down. Going to use model a spring on the 9" for my 37 ford truck.

 

48 inches center to center.

 

Just measured mine ... Its 49" also.