I have a 2016 Sandstorm built in CA.
No beaver tail however the ramp works find when on level ground for my Electra Glide and my Honda 250 Elite scooter.
Be sure to check and double check the weight carrying capacity. My numbers worked or so I thought. Found that the axle has been bumping the I beam frame. Only 3 inches of spring travel when empty and less when the 950 pound bike is sitting over the axle. I added a leaf spring and softened the WDH some. Have yet to test it again.
I also put my own Etrack tie down and wheel chocks inside.
Be sure to get the 15K AC too.
I love the big tanks. Great Camper.