It should work, but technology is much better now.Would this fixture still be good. Should I/could I upgrade the LEDs. Would I need to change the drivers?
I am not sure what I would upgrade to, need to see what would work best. The driver don't look too expensive anyways. Hopefully the stars are the same size so I could use the same heatsink.Without seeing a schematic, if the VF of the LED and the Package are the same you "probably" do not need to change anything. If you post a link to the old LED, and the proposed new LED, I can take a look. (I got dead pages from the links above your post).
It should work, but technology is much better now.