I was just wondering how well this would work.

I want to trade in my Vox AD50VT 212 combo for a Vox AD100VTH head (this is fairly likely, no? The Vox is 599.99 new I believe, and the head is 399.99) but I don;t have enough money to get the cab. However my friend has an old Fender Bassman cab in good condition, would the Vox head work on top of the Bassman cab? I believe there are celestions in it, I could be wrong. If this doesn't work, would the Vox head work with a Bag End cabinet? It's fairly high wattage.