Your new truck really looks nice; the stock "tiny ballet dancer" wheels on these things are just painful to see, though I understand why they are needed for the tight-curves guys.
Here is my Williams Hudson using a more-scale-wheeled Lionel pony truck (eBay); drops right in, just for future reference for anyone considering the conversion. (I detailed/weathered/command-controlled the loco - and faked a bit of the missing valve gear. The pilot is still too high....)