I just bought 1/4in thick, 1.5in wide, aluminum bars. I was wondering if it would be better to bolt it to the cars chasis and run the grounds off that, after i sand the heck outa chasis 1st. OR have like 3 chasis grounds and just run them straight to the batt?? If i bolt the aluminum to chasis ill run more then 3 grounds. Any input will help. thanks