63 and 64 Dodge rear bumpers. The same?

[fbs63]

Wondering if 63 and 64 Dodge rear bumpers are the same? Looked at pics and they look similar.

 

[PRND21]

Maybe in bolt spacing where the bumper mounts to the brackets. As stupid as it sounds, 64 Ply bolt spacing is different than 63, and 65 Plymouths. Not sure about Dodges.

 

[coloradodave]

Wondering if 63 and 64 Dodge rear bumpers are the same? Looked at pics and they look similar.

According to the Hollander manual, they are different.
63, except 880s, = #2266576 w/o guard holes
64, 330, 440, Polara = #2404660
Dave

 

[Dodge 330]

'64 Dodge bumper is much wider (taller) than the '63 Dodge bumper. That used to be an old racers trick. Bigger, heavier '64 bumper on the '63 Dodge for better traction...until someone pointed it out.