Both sites you linked date to the same general time frame (2013) and appear to use the same source material. Here's what a '37 Packard VIN tag looks like:
View attachment 12836
Now, go back and look at the genuine '29 & '30 VIN plates, plus the way-too-perfect fake. See the problems?
Capone would not have had the car in his name. Al was a smart guy. He didn't own things, he owned
people. It's well known that both his armored Cadillacs were sold under, and registered in, Mae's name. She also "owned" his houses. When he got busted for tax evasion, the government could not confiscate any of it.