I have a customer who wants to add dcc sound to 2 steam locomotives, one is a g scale Denver and Rio Grande 4-6-0, cab number 43 and the other is also a 4-6-0 Penn steamer, cab number 863. It looks like either the tsunami 826104 or 826116 sound dcc controllers would work, anyone have any input on this, I very much appreciate any help out there.