Champion is the best built Clone I've seen! It's a true clone. Meaning everything from a GX200 will fit. Predator from HF is not a true clone. Its a knock off. The ironton looks to be a Clone of Honda block but not bore and stroke.
I look at the gas tank mounting tabs when I look at clones. If it takes Honda tank then you have good start. Honda has angled tabs. Predator has flat tabs. Blue HF has no tabs at all. Good luck finding a blue HF tank to replace a dented one? Or a old style predator tank non vented? Easier to find parts for a true clone.