Hello Everyone,
I’ve just completed my car and now have it on the road. 
However, I have a major drone issue. The problem occurs between 1300 and 1800 rpm in all gears. You cannot even think, converse or hear the radio.

I have a Melrose header and exhaust system xpipe with Borla mufflers. 1.75 Primary, 3” Collectors, 3” x Pipe, 3” high flow cats, to 2 ½ Borla 11376 Mufflers. 

I can’t afford to change the mufflers, so …… What would you recommend ?

I am considering this Car Chemistry insert? 

http://www.carchemistry.com/silencer-insert/

I’m not really concerned about losing small amounts of horsepower. The car has plenty of power!!

Thanks again!!

Put it on and lose the drone.

A couple of things that may help, but not cure: make sure the tailpipes extend beyond the bumper and instal some sound deadening material in the cargo area. It made mine more livable.