I was very surprised at how well the IC 382 pulls. An equal to a Lionel General. With some work to the pilot truck's attachment, I got it to handle standard O curves fairly well, and it loves Super-O. (Bridge.rectifier to run on ac & a GG-1 roller set on the bottom's gear cover) I'd like the caboose. Almost got one when a case hit ebay, but wouldn't you know, someone bought the whole darn case
I think that engine has possibly appeared on the forum before. I'd guess 3yrs ago, maybe more. It might be worth a search anyhow.