[WKB]

Haro88,
A ute has different rear suspension than the sedan, but that can be overcome by purchasing a cradle from a sedan.
The difference I was told between a 3 channel and a 4 channel ABS is the number of inputs and outputs to the ABS . On a sedan there is a speed sensor on each wheel and an output from the ABS to each wheel. This allows the ABS to independently control the braking on each wheel. On the 3 channel there is only one speed sensor from the rear wheels so both wheels are controlled by the ABS at once. I don't think traction control is available with 3 channel ABS. The wiring harness also would and be wired for 3 channels.
By using a ute there could be problems. The best people to talk to would be DRB and ask them.

Warren