Hi I've got a 2007 Chevy Tahoe and I am going to put a 15" Fi BL in the back powered by either a Sundown 1500d or a AQ 1200d. Im wondering if thats too much wattage for my stock charging system to keep up with or will I be okay? I really dont want to upgrade anything so if its not possible to run it then i will just have to looking into something with alittle less power. Thanks