I'm looking to buy one via internet. Designation On30 would mean O scale, 30" gauge, would it not? A photo with a finger in it indicates that it is in fact HO scale, not O scale.

My question is, if I simply replace the trucks with appropriate HO gauge trucks, would it make an acceptable HO std gauge model? Minor clearance issues would be no problem. I'm thinking more of appearance. Anyone tried this? It's otherwise perfect for what I need.