Here we will cover lowering your 49-54 chevrolet. There are many different way to approach this. I will try to cover the different aspects from the basics of cutting springs and adding lowering block to an air bag suspension with a triangulated 4 bar.

Still working on this section.

Techniques for ultra low.
Tower-Notch OR a large C-notch. See photos
Hole in Trunk for Pumpkin
Elevated driveline tunnel (not in all years and depends on how low)

Lowering Stock (torque tube and original IFS):
Dropped Uprights with dropped steering arms will lower 2"
You can also cut up to 1.5 coils from the front springs to lower further.