Bit late but thought my input, might add some value. I fitted a gravity performance short shifter to my NA last year. At first I thought it was great, however, after jumping in a friends with a stock shifter I realised how stiff the short shifter mechanism felt. I swapped back to the standard shifter last week and it just goes to show that mazda knew what they were doing. Shifting is so much smoother and as a result just as quick.
I fitted a short shifter to my nissan s15 which is a very similar setup to the nc. Directly fitted on an aisin 6 speed box. I didn’t like it, it felt even more mechanical and unforgiving. Switching back to stock made me realise I was trying to improve on something that didn’t really need improving as has been stated. But it did look nice I will say .
Had it on a Civic, which together with poly bushings gave a really nice feel. On my NC though, I just really don’t feel the need to.
On my NC sport I changed to an aftermarket gear knob and mounted it 20mm lower than the stock one.
Feels nice and positive and the shorter lever has reduced throw slightly.
Dean, do you remember what thread is on the gearstick ?
According to the very first hit on “The Google” this…
“For both the NB and NC the threads are 10mmx 1.5 . The size for the manual is 10mm x 1.25”
I just had a look, the nc 6spd shaft is definitely m10x1.25mm .
Must admit I didn’t actually measure it.
This is the gear knob I used and I used the middle insert which they say is for an M10 thread.