Exhuast leake question

I have a Thermal R&D exhaust and it doesn sound right… I have a leak where they 2 parts of the exhaust connect (at the flange, near the rear tire) does anyone know where I can get a gasket to put inbetween the 2 flanges and will that fix it?

I cant hear the exhaust… all I can hear is my AEM cold air… wierd