I have a yellow top Optima up front, and upgraded 350 amp alternator, the Stinger 2250 battery in the back. I'm going to be swapping out those two phosphate amps for the salt 8. That capacitor is actually 25 farads I just didn't think I needed it because I had that battery and I don't know if it even makes a difference. I'm actually in the process of ordering the second alternator and a second alternator kit. I got a little more work to do but it's getting there but I don't know a whole lot about the fine-tuning process which at this stage should be more important than ever so I want to make sure I get it right. I'll have the salt 200x2 for my interior speakers on Saturday