Sound Deadening (how much difference)

[Minkota]

I recently checked the sound decibel rating in my truck and it was over 100db.

I have 4 boxes of
Siless Hybrid 3in1 200 mil 25 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material.

I have 2 boxes of
Siless Liner 157 mil (4 mm) 51 sqft Aluminum Foil Finish Car Sound Deadening & Heat Insulation Closed Cell Foam - PE Foam Sound Deadener. this will be laid over top of the previous material.

I am planning to do the entire cab floor, back wall of the cab, as much of the firewall as I can, and as much of the doors as I can.


Does anyone know how much of a difference this will make?
Will it be worth all the work?

I am not looking for suggestions on which products are better, I received this as a gift so this is what I am planning on using.