They are not exactly the same. The latch and receivers at the B pillar are a bit different: they are interchangeable but it is not a perfect fit. To make it perfect, you would have to swap out the receivers (the chrome soft top hinge covers) to match the early or late hard top you want to use. Some one else will have to offer advice on the front latches, as I know they are also different but I don't know if it matters.
Best,
g
'64 230sl, fully sorted out...ooops, spoke too soon