Meh ....I don't think the stock Marshall Major circuit sounds all that great tbh.
Loud as fuk, yeah sure, but it ain't a all that great without some cool shit hitting the front end.
Unless that head is in pristine, un-molested collector condition, I'm not sure who would actually be interested in this, unless the cabs are legit, and you want them bad, and have to buy the whole deal to get them