They might fit the rear... that is if your '47 is a '47-2nd..... as 9.00:20's became optional in '49 on the rears only...... without any change to the truck...andI've trial fited a pair onto one side of the rear of my '48 (Boomer) with no clearence troubles.....
Michael
\'48 chev 2-ton boom truck (Boomer) '49 Chev 2-ton flat bed
'65 Chev 35ft school bus
'88 GMC 6500
'72 Superior 26ft class "A" coach
'50 Farmall "M"
'71 MGB GT
'68 Austin-Healey Sprite
'65 Austin-Healey Sprite
and various other odd British cars
and lots of old radios.....
Although we know what the speed of light is..... What I want to know is... How fast is the speed of DARK??