Best place to ground in Tahoe

[JBurt09]

I am working on a 2003 Chevy Tahoe and am installing an AudioQue 2200D and two mids and highs amps.Amps are mounted underneath the second row seat on an amp rack and I put an XS Power 3400D up front to replace the stock battery.1/0 wire ran to the back for the amps and I was just curious where the best spot to ground the amps would be for now until I upgrade the factory wiring and ground the wires to the chassis.the closest spot would obviously be the floor beneath the amp rack under the second row seats, but I didn't know if anyone that owned a Tahoe or something had any advice as to the best spots to ground the amps if I haven't done the Big 3 yet.

Thanks for anyones and everyones feedback ahead of time.It is much appreciated.

[vr6bass]

Ive been told that anything bigger than 4guage should have a run back to the negative of the battery.