Reply to "Lionel Scale Die Cast Coal Hopper"

I converted 2 of these cars a few years back, and it was quite straightforward.  I mounted the Kadee 740 directly to the end , first drilling and tapping the holes and using Athearn 2-56 x 7/16 truck mounting screws.   The trucks are Atlas 100 ton roller bearing.   They make really nic looking hoppers, albeit a little heavy, but they track really nice.