Any decent 5th wheel toy hauler could easily handle it. The only issue would be the temperature changes in the garage of a toy hauler affecting the tuning... but since you're a "pianotuna," that shouldn't be a problem.
Rob
U.S. Army retired
2020 Solitude 310GK-R
MORryde IS, disc brakes, solar, DP windows
(Previously in a Reflection 337RLS)
2012 F350 CC DRW Lariat 6.7
Full-time since 8/2015