Somethings the site does that I don't agree
I'd be far more concerned about the VIN and body numbers matching.
And since neither has been shown in the sale ad, or on the previous Mecum sales auction to refute the issue, the probability is more likely to exist.
Due diligence? Sounds great. That is what asking about these things is! What it's a secret? It's not uncommon for people to purchase online without physically being there to scrutinize. Is it what you or I would do? I wouldn't, but many have to educate themselves with the knowledge to be as informed as possible before striking a long distance deal, or even a local one. That is the reason many are here. It's their method of Due Diligence.
When an individual wishes to sell any type of collectible they are free to advertise it anywhere they wish, however to target their biggest market they ultimately will advertise on a site that everyone is a potential customer. The downside is that the onus is on them to prove the items provenance on request, and they should expect that others on that site may take umbrage with their response, and may challenge the authenticity of their item. If they fail to do so, that is their choice, but it allows others to at least be aware of a potential issue, and either move on, or move forward accordingly. To that individual it may be the education of something they were unaware of and justifies their reason for being on a site that is specific to their interest in the first place.
On another site there is a lengthy discussion of an individual rebodying mcodes. A member on this site as well. As someone interested in acquisition, this education has been very informative to me, and for that I am thankful in advance for avoiding an expensive potential mistake. Due diligence in a nutshell.