1960 Fleetside bed rails?

[72bigred]

Hi all, I thought I read someplace that the bed rails mounting holes are different in some years.. like 60-62 and 63-66?? I dont remember if the holes that mount it to the frame are different or if the holes for the wood to mount to are different?? I had a mishap to one of them on the 60 I am building and it bent pretty bad.. Figured it might be easier to find one than heat this up and try and salvage it. Could someone let me know asap so I can try and find one, everything is sitting in the paint booth except this rail

Thanks

Skez