Just been chatting with Manager at Bowen Scarff. They are more than happy to have any of us come in and test drive an F150 and a Ranger both to get an impression of both engines. Just give them a heads up and they'll accommodate as needed.
You can legally register it in a different county in Washington but not out of state. Ie if you own a PO Box in Yakima but live in Seattle it is fine. It won't save you thousands but it'll save you a few 1/10's.
Registering it out of state to avoided taxes is a big problem. It's a gross...
For those in the RTA in Washington. Simply get a PO Box not in the RTA, $40 a year. Screw that BS.
Bowen Scarf in Kent, WA confirmed no ADM and lifetime power train warranty for Broncos.