installing new top

Hi folks, I am going through my 63 Dart body and I noticed that the holes to secure the trim where the top is clamped on the trunk are kind of all over the place.

I am assuming that the top was replaced in the past and that new holes were drilled to reinstall the trim. Is that a normal occurance for a top replacement?

Also while I am at the stage with the top off doing body work and getting ready to primer and paint should I consider welding the holes up before having a new top installed?

Thanks ya'll.