After having someone road rage at me today pretty badly (something about me not turning left into a cyclist which was crossing the intersection along with me me not tailgating the car in front of me after that) I've resolved that I'm not going to wait any longer to order my dash cams. I'll be ordering dual A119S' directly from Viofo along with CPL filters, and I'll be getting 2 Transcend High Endurance 64GB SD cards and 2 hardwire kits which I'm planning to tap into my existing Add-a-circuit from my V1 install. Will I need GPS in order to utilize parking mode when I eventually get a battery pack? Are the units which I would be getting automatically V2? Finally do you guys recommend I purchase anything else to assist with the install or make the whole dash cam experience better?