I have a nice set of unique spinner center caps that are made up of all stock original Oldsmobile parts. I know that these caps fit the rally style wheel on a Delta 88. The center cap part number is 557747 so that should be able to tell you if they will bolt onto your wheel. The center caps I believe are off a 65-67 Wire hubcap with a spinner. The spinner part number is 557931. You should be able to check my information. The all shine great. 1 does have a bit of rash on 1 blade, one has some oxidation / pit looking spots. If you get interested I will be happy to try and get better pics of ea. cap. This may not be correct but This is a neat opportunity to purchase a set of spinner caps to add a new look to you 77-84 Delta or a nice set of spinners for your 65-67 wire hubcaps. I would like to get 175.00 or best offer out of these.