I'm in the middle of replacing the luggage shelf on my 74 'vert right now.
It's not that hard to chisel out the spot welds.
The replacement shelf I got from cip1 seems to fit very well (after I straightened out the few dents from shipping).
This is the part I used.
And these are some pictures as I'm taking the old one out:
Since the vertical part looks to be in pretty good shape, and it looks like a real PITA to remove and replace all the extra convertible bracing, I'm considering cutting it in half and just replacing the lower part.
More to come.
Hope this helps,
mrweasel