I have a 1500 Watt RMS amp that I'm powering/grounding with 0 GA wire.
I read the stickies and saw the thread about amp installs and grounding under the trunk mat, however that is HIGHLY insufficient for my wiring.
Any suggestions where I should ground the amp?

 

1500 watts? good lord!

Perhaps if you or a friend have the ability, weld a stud to the chassis somewhere..

 

What i did with my Rockford Fosgate Punch 2400 watt amp is i got the ground simply from the top in the trunk by the speakers!! It works fine for me!!

 

Bump for any other ideas? I dont know anyone that welds hahah. Any sufficient stock bolts that make good grounds?

 

Why can't you just drill a hole in the floor and through bolt? Just be sure to scrape the paint so it conducts.