That would be the one you're after but it wouldn't hurt to call them and ask about some of the other similar transformers like the ones used in bassman and concerts.
Weber has the transformer you need in 2,4,8 ohm outputs, and is available in the both the Bandmaster Reverb size, and the larger Super Reverb size. Both are significantly less $$ than the MM. I have the smaller one in my Vibroverb clone and the larger one in a Pro Reverb I'm rebuilding. They both sound very good to me.