Seeing as nobody else want to look like an idiot here I'll give a thought!

In my head it would be as easy as cutting up a slice of stainless, in theory, but I think the challenge would be the H pattern would have to be to the natural resting position of the gearshift in each gear, and if yours is anything like mine, third is in the front bumper, 4th straight up and 1st and 2nd are a mm to the left.

Ok thats pretty exaggerated but you get the idea.

My fear would be the neat H pattern you'd want would end up looking a little unequal etc.

I say that because I'm fairly certain if you were to make a neat equidistant pattern for each gear you would end up holding the selector fork in a position it doesn't naturally want to be in.

I know fifth in mine doesn't like to be moved once its in there, if I apply light

(feather light) pressure forwards and backwards against the gate I can feel the teeth rubbing each other through the gear knob, like a very light vibrating.

Further to that if I lift off too harshly in 4th the jolt on the engine mounts likes to knock it out of gear unless I have my hand in front of it.

Having said all this I am 90% certain that my gearbox, despite all care for it, is pretty knackered, but I know how to drive her to get the most, gives character

So what I reckon is yes you could make up a surround for the gearstick to move through, but it would have to be shaped to the natural positions the stick rests in in each gear, or I think you'd end up wearing something out.

Now, hopefully someone will come along and give some better insight!

Actually regarding gearbox feel, I recently got a Quaife nylon gear knob and modified my stick to accept the thread etc, highly recommend that for making the gear change feel more direct.
