Hello, I started a project about a year ago to build my own 251 from a 21st century toy version.
Mine uses Asiatam tracks, Ludwig front suspension and drive sprockets. Spektrum radio gear and a whole lot of custom work to get it where it is now.
It's almost done just finishing up the turret with 2 cm gun. So far it runs great, tracks stay on and it goes off road so much better then the Torro M-16 halftrack I owned.
If you can wait a few weeks till I finish it up I'll post plenty pics but mine isn't as detailed as the discontinued kit pictured above, I only wish that it were. If that kit can be had today please someone let us know as I would love to have one.
Terry