About a year earlier I made a MOC of a yellow Peterbilt 379 with an extra drop axle driven by two XL motors. Well, I thought I could make some improvements of both technical and aesthetic designs, so here is a MOC of a Peterbilt 389 day cab in orange.
Several versions are shown here: 1. Original version 1 daycab in orange with stretched frame. 2. version 2 daycab in orange (extra pusher axle added, more narrow frame, some aesthetic changes like relocation of air filters, hood ornament, etc.). 3. White/tan 389 with Ultra Sleeper based on version 2. Chassis 2 studs shorter than the daycab.