Check the listing for details. Ho Scale AC4400 Canadian Pacific PTC Array Upgrade Kit Dual Track PTC. Condition: New. Listed at 12.50 USD. I recently made this Canadian Pacific AC4400 PTC upgrade kit for myself, and decided to offer it to the masses. This kit will take your outdated Canadian Pacific AC4400 and take it to modern times. I upgraded my new Scaletrains AC4400 from the early 2000's to modern times with these few simple parts. This is for all the parts you see circled in GREEN on the SECOND IMAGE. 2 x PTC tracks3 x Small Sinclair Antenna1 x Large Sinclair Antenna1 x Large PTC Dome (White dome with cable near back)1 x Small PTC Dome (small and red near front)1 x Unpainted 28 AWG wire, 3" length to go between PTC Antenna tracks ALL PARTS WILL COME UNPAINTED. The modeller will paint and install the parts themselves. ENGINE is also NOT INCLUDED. Thanks for looking, and be sure to check out my CSX AC4400 PTC upgrade kit as well!