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I have found a 52 or 53 and I'm wondering if the leaves will work on mine?
Yes they'll work if you drill a new hole through them. As Highflyer said above, the locator pin is forward of the axle. On yours the pin is under the axle. I don't know how hard it is to drill spring steel but I've read on this board of people doing it.

"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.