Will a 2004 ford 150 bed shell fit my 2001 dodge 1500?

My dad is a 2004 ford f150 when he bought it came with a ARE fiberglass shell the flat one that you lift up he doesn't use it he said if it fits my 2001 Dodge ram 1500 I could have it I was wondering if it would fit. Both the trucks have six-foot bed but I don't know about the outside of the bed dimensions

How about grabbing a tape measure and measuring both to see IF they are the same size?