just go to accessory shop, try any of the PU ones there and modify to fit. That is all.the simpler the design, the easier to modift to fit. Give it to a good paint shop, or panel beater to install. It would look good.
I was looking around for a new shifter knob to brighten up my already drab looking 11-year old interior. Hunted around and found some neat ones but at very steep prices. So i thought, why not make my own?