what do these rear bumper brackets fit? i bought the wrong o

bought these 10 years ago, blasted them and painted them, pulled my bumper off the 66 belvedere I to swap the brackets, and the ones i bought are different and wont fit. so am going to blast my old ones and hope they are still usable. the ones i bought have a stamping # 253350 or 8 5 DPCD L, 253350? R

HERE ARE SOME PICS. THANKS
any idea what they fit?

per the '66 & '67 parts catalogs:

2533454 / 2533455 are 1966-'67 Belvedere except wagon

2533504 / 2533505 are 1966-'67 Coronet except wagon

2533506 / 2533507 are 1966-'67 Charger

2533516 / 2533517 are 1966-'67 b-body wagon

thanks! 504&505 is what i have 66-67 Coronet exc station wagon.