I have a late 90s vintage Carvin ProBass 100 combo. It's a single 10" combo and it sounded like crap the day I got it. Now, the amp pots are so dirty and noisy that it's totally unusable. But I never used it much to begin with, so the box itself is in outstanding shape, and the amp section neatly unscrews and pulls out, leaving a nice little carpeted-covered shelf where I can set my GK MB Fusion head. So I was thinking about making a better cab out of it as a project, and am looking for opinions. I don't think any of this will be economical, just fun. The cabinet is about 14"x12"x12". Here are the 3 options I'm looking at: Stick an Eminence 3010LF in there to try to create a "Super10." It looks like there might be enough room for me to snug in a 2" midrange driver on the front. Both speakers plus the crossover would be about $300 in parts, so I'd like to be sure this isn't a totally stupid idea before I consider it. Put in one of the Eminence 10" drivers that has a "wizzer" style design, which would remove the need for a midrange driver. But those 10" drivers are relatively normal products, and the result would be a nicer, but still mortal 10" cabinet good for the basement and occasional coffee shop and little else. About $75 for the driver. Leave the 10" Carvin driver in there and drive it with the MB Fusion. I've tried this already, of course - the speaker is in fine shape and it sounds a ton better than the OEM Carvin amp did, but this option is no fun. What would you guys do?