How long are the front leaf springs on a 48-55 pickup?

[Maximus]

As the title says, im trying to find out the length of the front leaf springs of a 47-55 pickup. I'm using front leafs from my 55-59 frame for a custom project but think that I may be better off with a 48-55 front setup because i think the springs are shorter... are the 48-55 leafs also 2" wide (like the 55-59?) I could always just buy new springs for the older trucks if the widths are the same unless someone here knows why they wouldn't bolt on to the stock mounts on a 55-59...

anyways, any info will be appreciated...