Stock gauge clusters... how many different types?

[WASABI]

I have a question about stock gauge clusters. I broke mine, and got one off eBay with the same year/transmission type/miles (roughly), but when I turned it over, the backs were different, the part number on the top was the same, but the lights, and flexible circuit board/sheet was different too. Does anyone know if there are different gauge clusters, within the same year, like if there was different manufactures, and do they all work the same?

[atank]

Adam may know.............................but I have swapped out clusters and they work, I like the true oil pressure gauge on the 90-94, instead of the on-off type on the 95-97 models.