My mini review:
Board came packaged well. There was a delay in delivery and Matt was on top of it the whole way. He was more concerned than I was but it arrived safely. Quality and construction of the board look to be top notch.
I installed this board this morning played around with adjustments and played some games. Installation was quick and easy. Board is a little less than half the size of the original and lines up with mounting holes on bracket exactly. In my opinion best bet is to remove the plastic standoff and use two screws to hold board in place.
Board worked immediately with no changes to anything on my machine. I played with the adjustments and have the sounds dialed in about 90 percent of how I want them. Sound is close enough to original board that no one could tell the difference when playing the game. No two Centaurs sounded identical anyhow and with the easy to use adjustment knobs you can find the balance of delay and distortion that you like best.
The only thing that would be a nice addition to this board would be calibration marks on the adjustment knobs. This would help in two ways. If I found a setting that I liked I could still go looking for other settings and return to that exact spot. I may mark them myself for this purpose. Other benefit would be if someone else with this board found settings they liked or thought really compared to the original settings then I could easily dial those in on my board. Might be a picky detail but I would find it helpful.
Overall I find this board to be a great value. My original was still working so this is cheap insurance. To someone who didn't have a working original this is priceless.