Centers Auto Drag info needed.

I have a couple dozen in back of shop/
By memory = 3 5/16 and 4 7/8 (Might be 4 15/16)
Nothing anywhere close to what you are looking for.
Cragar Super Tricks came 3 1/2 and 4 1/2.

Bob De Vor who ran Centerline would not make custom back
spacings even for the sponsored Racers so I do not think you will
find your back spacing. He did for me sometimes redrill an extra
bolt pattern in an existing wheel but that was about all the accommodation
they were set up to do. Perhaps changed the last few year before they quit
about 5 years ago but I do not think so.
Maybe someone has one of the later catalogs.