Civic EG

Is there such a thing as sound blocking for the inside of the car?? If so where can I find it and what's it called

Yes there is such a thing.

Check out the link below to see some of the options. Dynamat Xtreme, and Stinger Roadkill are the two I've tried and had great results with. You can google dynamat alternatie and see some of the Home Depot/ Lowes options people have used if you are on a tight budget.

http://www.sonicelectronix.com/cat_i145_sound-dampening-deadening.html

This is what I found https://www.google.com/shopping/product ... ine&sgro=o

That is the undercoating for your car. That is all the black rubberized coating spray on the underside and in the wheel wells. It helps to prevent road noise and stop road conditions (Salt, water...) from causing rust.

On the interior you would use the sheets I linked or if you really wanted to you could use that spray on coating but I don't know how effective it would be and masking off your interior to spray that is more involve then sticking on some mat with a roller.