Vehicle Fleet IV was quite outdated for its time, so it needed to be freshened up a bit for the subsequent game. R*'s attempt to do this by introducing an updated Packer in V was, to put it mildly, not very successful. They casually slapped a Stockade front end on the Phantom and called it a new vehicle.
However, with the custom sleeve this truck has a lot more character and personality. It has tons of improvements and is no longer just a poor remake. Here are the most important changes:
The truck is now available with a low-roof sleeper cab option in addition to the high-roof regular cab.
The high-roof version received a side skirt.
Liveries consisting of various designs, DOT numbers and company logos have been implemented.
Arches are additionally installed on the front bumper.
Added front turn signals.
An additional color has been added which is applied to the front bumper and side skirt.