Measure the height of your 5er while hitched to the truck. See if the added height of the dome is too much and keeps you under 13'-6".
I think the Skyline 5ers were considered mid-profile and not all that tall to begin with.
Ken
Amateur Radio Operator.
2023 Cougar 22MLS, toted with a 2022, F150, 3.5L EcoBoost, Crewcab, Max Tow, FORMER Full Time RVer. Travel with a standard schnauzer and a Timneh African Gray parrot