I just took the entire board out of the honeytone and reinstaled in in the new box...I am a electronics tard.
I bought a 8 AA holder with a 9V connector ($1.89) and put in a dummy battery, so when I use AA NIMHs I get 9.5V fully charged with the meter (calculated it shoudl be 7 X 1.2 volts). With the AAs I get 10 X the capacity of a 9V NIMH.. I also made a dummy 2 AA "stick" for when I use Alkaline batts. (6X 1.5 Volts) I just made a pig tail with two 9V connectors and a wall wart connector wired in. So there are no mods to the stock wiring. I just insert it between the batter box and the amp board with the connectors. You have to wire the one to the board backwards though. I can post the diagram if you want (DC power is the extent on my electrical knowledge).
I got the speaker on e-bay, its a old stock/new radioshack 8" 15 watt speaker. Radio shack quick making speakers for hobby dudes/Dudettes. The port is for a sink drain with the angl cut off. (Glug Glug Glug). I also got the speaker grill on e-bay. I like the cool knobs, Radio Shack. The pigtail was from a 12V charger I had I couldn't remember what is was for so I cut it off and used it. (9V multi extensions fit into it also). Fabric was from Hancock fabs and glued down with Original white "Tacky Glue" from Wally Mart. Most of the box is 1/8 birch ply. The front and bottom are 1/4. It's all pretty light, one of my goals.
It was a fun project.