RTS Tracks with a new head.
I wanted to get away from using Wheeljack's head, so I used the energon Downshift head left over from my Siren custom. I had to widen the neck socket on the head, then carve a channel on the inner chest panel of Tracks so it could still transform.
I left the knee pads on to support his legs - he has a tendency to lean back.
The bonnet designs were cut out from toothpaste tube, superglued on then painted.
I don't know if it's noticeable but I painted the windows with a clear red.
Here he is with my customised Tracks (I made him a bit taller)