Get out your safety glasses, work gloves and Dremel cutoff disc and grind off part of the Kato frame as shown below. This is necessary to make room for the VIA air tanks. Do this heavy work outdoors and with all the right clothing and safety gear as this is a dangerous operation with bits of metal flying all over the place.
For Kato, the plastic side contact railings need to have the two narrow skirts (one per side) filed off as well as the air dryer part. Next, file down some of the step detail and snip off the engine door step from the stirrup step collar. Attach your home made resin fuel tank side castings and glue a styrene plate underneath the fuel tank halves. Build a battery box out of .020 styrene and glue the fret battery box sides to the ends of this box. Glue the box to the underframe. Build and install air tanks, air dryers, numerous lines and traction motor cables as shown in these photos. Both Kato drives masked and airbrushed with flat black paint. Ready for mounting to shells.