I don't beleive anyone makes a hull like this for the Pershing so like yellowshaker has said you may as well get one from Phil the way you want it or buy the parts from him and do it your self. There is very little as far as upgrades for the Pershing, not that they need many. 3:1 gear boxes aren't needed as the Pershing is already reduced at the sprocket. I converted my HL Pershing to all Tamiya electronics and gun assembly and it works just as well as my Tamiya Pershing and have been told by a few Tamiya guys they could not tell the difference and that they thought it was a Tamiya until they saw how far the gun could depress because I used the Tamy recoil and a servo for elevation.