We've all known for a while that the 1.9 Z3 shifter could be installed in an e21 to shorten up the throw, but as it turns out nearly all BMW shifters are interchangeable. Here's a lineup of the shortest ones. Remember the longer the shaft below the pivot, the shorter the throw. I assume the Z3 M one will hit the drive shaft on an e21, but the rest should probably work. I can't remember if our stock one has the bend in it or not.