Just purchased a 2018 3790RD to take delivery next week. I need to track down the type and model of pin box, as I need to get a Reese Goosebox for pick up. I assume it is a Lippert but uncertain of the actual model, still waiting on dealer to return my call and they are closed Sat. & Sun.
Congratulations on your new order. I have a 3791RD on order for May delivery. Regarding the pin box, the latest appears to be Lippert Road Armor (Trailair). From what I have heard this is exclusive to Keystone.