Two part question.

First, does anyone have any guidance on snaking some wires (mini USB tips) in through the firewall somehow? I need to install my laser jammers. I remember the C7s had a grommit I punched a hole in on the drivers side. Doesn't matter whether it is the driver's or passenger side, the wires are plenty long.

Second. I noticed RSNAV doesn't have android head units available for D4s and I really came to like mine. I know they're widely available on aliexpress. Is there any preference on which one?