Just replaced mine with the Jabsco 37010-0090. Wanted to go the Raritan Elegance route, but Amazon had the Jabsco model for under $400 delivered.
Had to spin the base 90 degrees so the motor assy would fit. (3000 SCR)
For power, run a new line for the head. Use the 10 gauge as called for as these things pull a lot of juice, and fuse properly.
This model is a little noisy, but has worked great the past few weekends we've been onboard.