Parts book shows the bumpers are the same.
The grille halves are different cosmetically, but should swap. Overall car body widths are the same. So are the grille support parts.
The hoods are different. The Electra 225 hood has a front-to-back top molding that is not used on the LeSabre. Also the hood hinge springs are different. There was a considerable price difference as well. This tells me the Electra hood is longer and likely won't work. It would be good to check the hood length before buying.
What has been, can be again. (Bob Wills, 1942)