I just had that cap laying around so I threw it in next pay check im doing the big 3 upgrade, a second battery, and a 220 amp alt. The reason for the random pieces of dynamat are because I only had 2 sheets and I just wanted to cover as much as possible. The ports are the same size I just used my Iphone to take the picts so quality isnt great. Last I have have terminals just havent installed them yet but I wanted to see how it sounded.
What kind of battery should I get for my second battery?