The cab has a 12" Eminence Lady Luck Speaker and has an open back with mesh covering up the opening.
Drak, I can see where your coming from with building a new body and I could easily make a new mahogany body for the guitar in a day or two, but my main concern is the pickups. At the time I built the guitar I didn't have much money so I only spent $20 for a set of some cheap no name pickups off eBay. So I want them to go first, and don't mind spending all that money on BKP, and as you said in another thread, if you don't like them, you can put them up on eBay and get most of your money back.
I'm also going to be modding my Valve Junior head in the next few weeks to get it sounding a bit more to my tastes, and also add in bass, treble, gain controls along with a bright switch and a master volume which should get me closer to the tone I'm looking for.