Technical 56 olds hubcaps

It is my understanding that the 56 olds "flipper" hubcaps will not work on the factory 49 ford shoebox steel wheels. What wheels do I need to get in order to use them? Please and thank you! Picture of hubcap for attention.

 

I put a set on my factory 51 merc wheels
15s

 

Is the merc lug pattern the same as my shoebox ford?

 

Late sixties through the 80s f series pickup should work if the original wheels won't

 

Don’t think so
Should be 5x4.5 for the ford
Merc is 5x5.5
have you tried em yet?
Are yours stock wheels?
15s or 16s

 

Google said 5.5" for Ford. If Google is wrong I'll change my donor suggestion to 70s full-size car lol

 

Cars changed to the 5x4.5 pattern
16x4.5 and15x5 wheels were available
The trucks and mercs kept the 5x5.5 bolt pattern

 

Ok yeah then 70s Ford full-size car lol

 

Factory 15 inch wheels