Your amp is a head, right?
I'm just thinking out loud here, but I wonder if it will be possible to make a "clone" out of this amp. The power section/output transformer might not be able to be reconfigured the way you want it. Have you already looked into this?
FWIW, I used to be in a band with a guy who played through a brown tolex Vibrolux (1x12, I believe), and that amp kicked some ass tone wise.