Will these actually lift a 79 Bronco 4? Or 2 to level the back to go with 4 coils like a lot of the kits do? And are they 2 1/2 or 3 wide?

• Will these fit a 1989 Bronco? fitment
• Do you still need to use the factory wedges with this spring kit? general
• Will the U-bolt plate work for a 73 f100 while using the original u bolts? general