Snags. Let's see... Besides time and money, I'd have to say my biggest problems so far has been getting all the hardware to run reliably. I'm hoping a DC to DC power supply will fix most of the instability but I don't think it will cure some of my other problems such as USB devices not always being recognized and the computer sometimes thinking that the GPS is a serial mouse and causing the cursor to jump, click and drag everywhere. The best thing I can suggest is to take the time to plan everything out. Know where you will place everything ahead of time so that you can make sure power and data cables reach, dash controls can be relocated and it's final layout is functional and also nice to look at. Good luck with your Ram and your project!