Mine came from a 94. I just did some more searching in the EPC. As it turns out, the two styles are 88-95 and 96-98. The earlier style (the one that my pedal and both of yours are) are the early style. Style 90'Rado has is the 96+ style. To me it makes sense since 96+ are vortec motored trucks and something under dash must have changed enough to need the space.....
Judging by the EPC, 95's were to have the newer bracket but probably didn't for some reason or another.... or it was possibly a running year change? I'm not sure. I'm still trying to track down the 88-95 clutch bracket part number to confirm, but it has been discontinued.
I was referring to 'rado's bracket being from an '88, I think thats what he said his was pulled from. all my work was done on my '96. and the '92 pedal barely fit, I would doubt that all the extra material like 'rado's has would work under there. his bracket really doesn't look simmilar to the 96+ one in that diagram either. his bracket is kindof a mystery.