It's hard to tell...the donor car was not from the 60s and in the article (that is not from the 60s) it's reported that it took him 3 years to complete it...the car on display at the museum have got 19XX-19XX, covering from the year of the donor car onward.
Reading carefully the article and the description of the yellow&black car (and after a good look at the pics), I can tell you that these cars are not the same but pretty similar.