Auxillary Fuel Tank for an 07'
 

I have an 07 Chevy Classic that I want to put an auxilliary fuel tank on. I bought a 65 gal RDS fuel tank/tool box combo and the hook-up kit. The thing is, I keep getting told that if I mess with the fuel system that I am going to screw up the fuel sensor and the truck will just shut down on me. I want to run a hose with a cut-off valve on it from the Aux tank to a T that I will put in the factory fuel line. Any advice would be much appreciated.