I'd be a bit worried about that generating too much heat in a closed space using halogen bulbs.
Mine died too and I always felt that the stock florescent fixture sucked anyway, so I ended up throwing what I had sitting around at it. I had an old bathroom over the sink light, one of those flat on the wall with multiple bulbs things that I just replaced sitting around, took all the trim off of it, cut off a 4 socket piece with the bandsaw. The sockets were held to the steel backing plate with steel tabs that were easily bent to fold the sockets so the bulbs would fit flat against the backing plate, which got screwed to the top of the original light housing and wired into the original switch.
If I remember correctly, I have either 60W equivalent (12W) bulbs in there or a mixture of those and 100W equivalent CFL's in the sockets and it's _really_ bright. I like this setup