I used one after buying three used clusters, all of which ended up being majorly screwed up in some way. The fit is ok, the finish is too flat, the Camaro script is a little different (only a problem if you don't have the dash clock), but the biggest problem is the poorly formed mounting studs for the vents, wiper switch, etc. I had to run a drill through every stud before they would accept a screw. Pretty sure the studs would have sheared off if I hadn't clearanced the holes.
I think it looks great installed in the car. Please don't buy the repro gauge bezels, though...have a look at 'em and you'll see what I mean.
