Gibson split rear exhaust sytem advise

[J_lope82]

I have a 1998 Chevy Ext Cab with 5.7/automatic 2wd. We installed the Gibson SS 2.5" dual rear exit with bowtie tips along with a Magnaflow SS y pipe (new cats needed old ones were shot), Granatelli mass air flow sensor, K&N Filtercharge cold air intake. The sound on the system is kind of loud at idle, but barely noticable in traffic. Noticed some hp gain, but the other benefit was better fuel mileage, too. Love it!!!

Any drone on the inside while driving?