hey tongman if you can install dinoc on your fangs and valance you can definitely tackle the HU swap.
it's real easy to do and DIY's here as well.
basically you only need your new doubledin HU, wirehareness, antenna adapter (make sure you power that blue dangling wire), and a PAC remote adapter. all can be had through amazon for cheap. i suggest you wire up your rear camera too if you're even thinking about doing that in the future. just do it all at once.
and if you see a tiny gap along the bezel you can make your own trim with some hard-felt sold at art stores. no need to buy a trim kit, just reuse your stock one.