VZ SS Thunder ute exhaust???

[disco78]

I've got the VZ thunder 6 liter, Automatic
Had exhaust bros do the cats back and put two pipes out the back with with a balance bar and dual tips to look like the VE's.
But I get a terrible drone noise in the cabin when the car is under load but not high revs. Any ideas how to make it get a good note but no drone noise???

I've also gotten a quote from them to change it up by getting rid of the mufflers in the center and putting a pipe straight through then getting rid of the hot dogs on the back and replacing them with a 3 inch stainless muffler with stainless tips.
Anyone got thoughts on this
Cheers

[one_and_only2004]

I had a 2.5" twin exhaust, 3" hot dogs in the middle, nothing down the back, no balance pipe. There was no drone at all - I couldn't believe it myself. Now I'm running
Pacemaker Tri-Y's
Magnaflow cats
and a POS Stainless Xforce exhaust - DO NOT buy it. Go with the pacemaker 2.5" twin system.