Help Anyone changed the shifter not the stick or knob but the actual shifter

[stradman]

Hi guys,
I am having some difficulty in shifting into some gears so I am going to try firstly changing the
shifter that attaches onto gearbox,to see if that helps. However I just wanted to know if this is possible to do from the center console
without lowering the gearbox.
If so please let me know.
Cheers

This is what it looks like

shifter.jpg

This is what is under the gearstick gaiter(picture from Billswebspace)
So before I start removing rivets just wanted to see if this was indeed possible

gearstick.jpg