Short bed or long bed truck? Restoration or custom?
The spare tire fender is different based on the truck wheelbase.
On a short bed the cutout is up higher and back farther. The end result is the spare tire up in the air higher.
Here are some photos:
Stock Short Bed Spare Tire FenderLong Bed Fender I Installed On My Short Bed Truck
The spare tire bracket on the truck looks like this The spare tire bracket off the truck looks like thisAnd there are also some factory reinforcement pieces
factory reinforcement pieces that attach the bed upper rails to the bed sides.
If you are building a custom truck you might be interested in a custom hidden mount for the spare tire. See post #11
hereHope that helps

John