Short Shift and Quick Shift are essentially the same thing. The ERST B&M Shifter is replaces the internals in the Shift mechanism and is very good. It's made better by replacing the shift rod from Ford, which when I bought mine was around £30. I pity anyone that wants a B&M nowadays though, they are close to £300 now.

There are other cheaper kits and cue all the B&M haters telling you that the £50 Rally Design kit is just as good.

The B&M totally transforms the shift-feel and I'm gutted that I can't get one for my MTX gearbox.