On the fender tag for a 1970 Cuda I have no code for wheel or tire size. I do not have a build sheet so how do I determine what wheels and size tires belong on it? I assume since there is no tire or wheel code on the fender tage it must have come with basic steel wheels and what ever the basic wheels are. It is a 383 4 barrel, with automatice,and the A31 codde on the fender tag. So what wheels and tires belong on it?

In 1970 there were no codes used on the fender tag for wheels or tires.
Is there an original tire pressure decal in the door jamb?
Do you have the original transmission w/speedometer pinion?
Are the brake drums red?
Are there spacers under the lower control arm bumpers?
Is there a spare - wheel, tire, hold down rod, etc.?
Is it a convertible?

STANDARD 'Cuda (BS) wheel was 14x6.0" painted body color w/"dog dish" hub caps
OPTIONAL wheel covers W11 - "deluxe wheel covers" $21.30 on 14x6.0" black wheels
OPTIONAL wheel covers W15 - "wire wheel covers" $64.10 on 14x6.0" black wheels
OPTIONAL wheels W21 - "rallye wheels" $43.10 - 14x5.5" or 15x7.0" wheels
OPTIONAL wheels W23 - "road wheels" $86.15 - 14x5.5" wheels

STANDARD 'Cuda (BS) tire was T87 - Goodyear Polyglas F70-14 w/Raised White Letters
OPTIONAL tire T86 - Goodyear Polyglas F70-14 w/white stripe - N/C
OPTIONAL tire U82 - Goodyear Polyglas GT E60-15 w/Raised White Letters $47.95