The original Porsche gear lever housing is big, ugly and made of plastic. This picture shows an aftermarket conversion kit for replacing the nylon bearing housings with anodised aluminium ones. The theory is that the mod will reduce play in the linkage and make the lever action more positive and tight. 

So, I copied the idea and made my own, adjustable aluminium bearing housings 

I trimmed away everything that wasn't part of the lever movement mechanism and made a new housing for it from 3mm aluminium sheet. 

Here it is all Cleko'd together with with the trimmed, original housing secured inside.

My mate (and P4 chassis welding veteran), Ray, TiG welded it together.

Cables attached ready for testing in position. The Clekos will be replaced with stainless screws.