You would most likely want to move the plumbing. The drain lines will be the hardest to move because of the short distance between the fixtures drain and the holding tank under it. Give us more info to go on.
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7