I spent quite a lot for a chassis made to original drawings, but I have no idea about whether the spot welds are in all the right places. I don't like your use of the term "wrong". It's hard to imagine that all the welds are in the same places in all the original monocoques, and many of them were rewelded after race damage and some were rebuilt using new panels or original replacement panels. There are very few GT40s running around with an entirely original chassis- most of them have been repaired at some point because of rust over the years, race damage, etc.
We've had various discussions on points similar to this over the years and I find them frustrating and difficult. My car, for example, was made in the last ten years and isn't a 1960s car at all, yet it carries a 1000-series serial number given to it by Safir GT40, Ltd. Is mine more or less original than a Gelscoe car which is more faithful to the original build, but doesn't have a GT40 serial number at all? You tell me. I'll let you know whether I agree with you or not.
I've spent years on this forum, and I think that put-downs of each others' tastes don't have a place here. We are supposed to have in common a love for these cars and the tradition they have become- it isn't a race to see who can figure out how many spot welds are in each piece of the car, and to dismiss someone else's efforts because they don't know things of that type. Or because they are making their car of the "wrong" material. There's such a thing as free speech, yes, but there's also such a thing as manners and civility. If you have to take issue with what someone says, do it in a civil way and be prepared to back up your contentions with actual facts and evidence thereof.