If you're doing a "stretch," say lengthening an A to use in a '32, or a "shrink," say '32 to '33 / '34, you'll have to heat and bend the center forging to get the perch to perch spacing right with the new leg length. For this reason, I think that the '32 center forging might be a different forging from the '33 / '34. Either that or they might have tweaked them at the factory. (Anyway, I have a nice '33 / '34 wishbone that I'd like to swap for a '32 if anyone is in the opposite boat.)