Sound Insulating my truck?
 

if anyones done this please let me know. im going to make my cab silent! and is there any way to let in high pitch noises like my turbo but dround out the rest of the noise? what stuff did yoiu use and what can i do to the doors?

I did my doors with Fatmat mega mat when I installed my stereo system. It is quieter but not a huge difference.