Hi Zeus,
I reckon that my short shifter is a Chinese replica of the B&M.
The change over from one shift lever to the other is quite easy.
The instruction pages I sent explain it quite well, but it does become clearer as you are doing the job.
Changing the lever will not alter shift pattern or anything else.
It will only shorten the throw forwards & backwards & side to side.
When you refer to shift times, I get the impression that there may be other things causing slowness of movement of the shift lever forwards & backwards & side to side.
I strongly suggest that you read Redtarga's Technical articles on the Forum.
There are quite a lot of moving parts in the arrangement from the shift lever in the cabin, to the levers on the gearbox.
I have replaced them all on my car, & am about to try some different bushes in the gearbox ends of the cables.
I have also replaced Clutch Master Cylinder, pedal clevis, plus release cylinder internals.
The heat shield is missing from the release cylinder, & I reckon that my clutch fluid over heats/boils, causing poor shifting.
This time of the year, when it's cold it shifts o.k. but I reckon it should be better.
I still have work to do.
I will still see if I can find other discussion on the Forum which may help you.
Rick & Carmikey & I swapped some discussion about replacing the little shift block with a roller bearing.
Best Regards,
Peter