Rear bumper

Is there any way that a '72 rear bumper for a Duster will work for a '74? I really like this one from ebay and the price seems right but only listed for a '72. Here is the link.

http://cgi.ebay.com/ebaymotors/BUMP...004QQitemZ140303136058QQrdZ1QQsspagenameZWDVW

Any info is appreciated. Thanks