Dale,
Be aware that the 56 car is 5 lug and the truck is 6 lug. The only thing common is that they used the same full size hub cap for the Bel Air and the Cameo that year.
Fred


1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine