First I would measure where I would be putting it. Remember you will have to put a base on it. Deduct the height of the base and then you have the size of the cabinet box you need to build.
Next build a cabinet box that size , with a top, bottom ,back and a middle shelf all dadoed in. Then carefully take apart the face frame,clean them up and sand off the old finish and cut dadoes/rabits into the face frame to fit the box you just made. If the new box is shorter than the existing face frame, you can rip down the middle cross piece to shorten the overall height, Then fit the doors,sand and finish, reinstall the hardware and build a base to set it on. Looks Like you have some extra material standing up there to use if needed.
You may want to start with new material and just build a new cabinet, it is going to be more work to save this one, but if it has some sort of nostalgic value then go for it.
But get some heat in there , it is hard to work in the cold. Good luck.
Last edited by Herb Stoops; 12-09-2014 at 11:41 AM.