door locks

I had thought about replacing the door locks on a 65 Barracuda. They are not expensive on ebay, But all say only fit 66 and up. Is there a difference in 65 and 66. The body styles are so similar , I don't see a difference in the two.
Advice.

Most everything I am seeing shows 61-65 being the range of interchange.

This for example, shows as fits 1965 Barracuda; http://www.ebay.com/itm/MOPAR-Door-...rracuda&hash=item339cbca2d3&vxp=mtr#vi-ilComp